Hey guys , welcome back to the 4th Day
of Our Webinar This Week . Um
I went ahead this morning and posted
the webinar , video and audio from
yesterday's session . It's on our
website . Um Same place as all the
other files have been . I just added a
couple of data files for you guys to
use if you want to look at this
information later today or while I'm
going through the The session , um it's
on the web page , it's under data files
for day four . Um Today we're gonna be
covering going over wave grids ,
creating the wave grids . And I
mentioned earlier that right now the
wave grids are only available to be run
with the variable spacing , like we did
on Tuesday for the flow grids . Uh The
telescoping availability is not ready
for the wave grids , but hopefully in
the next um the next little while we'll
get that maybe in the next year , um
we're gonna be covering , creating the
wave grids . It's very similar to what
we've already covered , so that'll be
good time to go back over some of that
same information . Um Also importing
wave spectra from buoys and gauges and
how to create wave spectrum energy
files from just the bulk criteria . Uh
And if there's time , uh probably go
over a little bit of how to make the
CMS . Flow CMS , wave grids interact
with each other through a long
simulation . So are
there any questions from you guys for
anything that we went over late
yesterday afternoon ? Anything I need
to go over real quickly before we get
started on working with the wave grids .
Okay . And so just post your
questions and I'll try to get back to
them shortly . Um
like I said , the data files that I
have for you guys today are in a zip
file called wave dot zip and they'll be
put into a wave folder . It's a few
files here and we'll be working with
them all of these over the next
a couple of hours and um let's just go
ahead and get started then . So just
like working with the flow grid
basically start out with a fresh sms or
you can load your other information
back in from working with your flow
grid . There's a few different ways to
um build wave grids and I'll go over a
couple of them today . So
looking in that wave folder , I'm going
to grab our merged with symmetry that
we've used a couple of times . I've
actually modified it a little bit and
taken away some of the extra points
that we don't really need . Um I've got
a lot closer down to the area that
we're looking and interested in . So
I'm going to turn on looking at the
contours because so I can actually see
the bay . So I go into date display
options contours . I'm gonna choose
color fill , specify my range . I've
done this a few times . So hopefully
you guys have got the idea of how to
change these contours and then tomorrow
we'll go into a few of the other
display features for showing various
contours and vectors , um different
palates for looking at magnitude
differences , things like that .
Um There's a question from Mark , who's
asking if there's a help document for
the web site ? Um like we had for the
first couple of days , I don't have one
of those ready right now . Um
but I will put one up there on the site .
I'll let everybody know where uh that
when that material is there . We're
taking a little bit of this material
for um this webinar from a different
couple of different workshops that
we've done and it's got some other
information in there that's outdated
and we're trying to make sure that you
guys have the most recent . And so it
may take us a little while to get the
other document up there and available ,
but it will be similar to the ones that
we had for the first couple of days ,
either presentation or even a hands on
step by step process .
So I've got the symmetry loaded and I
can zoom into our area . And
so just like we did for the flow grid .
What we need to do is to create a new
coverage in the map module and I'll
name it um humboldt Bay Wave
because we're actually going to be
building a wave grid today and then we
moved down into the models and look for
C . M . S . Wave instead of CMS flow
and so they're very similar but there
are a couple of differences and I will
point those out to you as we move along .
So just create this coverage . Gonna
change my display options just a little
bit more too so I can
remove all these digits of precision on
that . Um legend that somehow I got 20
in that precision .
So now what we need to do is make sure
that the wave coverage is selected .
Then we can draw a wave
grid frame kind of like we did for the
other . Another thing I'm gonna do real
quick is go back into display options
and turn on some transparency . Like
we've done a couple of times just so
that we can see the grid frame and the
refined points without having to to
look really that hard for them . So
let's create the grid frame with the
create grid frame tool that's right
here . And what's different about the
wave um grid as opposed to the
flow grid . The wave grid has to be
have a certain orientation . So
for the waves to work
properly you need to start your first
point . The point of origin needs to be
in the open water no matter what
direction the waves are propagating if
you're on the east coast or west coast
or in the gulf of Mexico . Um The great
Lakes always start building your grid
frame for your wave grid in the open
water .
So we build
that and I've missed a little bit of
the bay , but that's no big deal . I
can move this grid frame later on . So
I've got the area now that I want to
create the grid frame for and I can
actually extend that back to get more
of an area and so we can do
something like this is for our our grid
frame . The reasoning for starting
all of your grid frames for the flow
grid . I mean for the wave grid in the
open water is because the way the the
wave model works basically , it starts
on the at the point of origin on that
last row and it starts marching in one
row at a time . Uh and working through
the energy and the the depths and
changing the periods and directions and
the intensity of the waves as it
marches towards the shore line . So it
has to know where to start these waves
from . So now that we've got that built ,
um like I said , you can move this ,
you can rotate it just like we did for
the the other grids , but this is gonna
be sufficient for what I need for right
now . So I'll just move forward . Um
The next thing we need just like on
Tuesday we covered , we need some ways
to specify an increased resolution .
You could go ahead and make this into a
grid if you wanted to , but that would
have constant spacing at some uh preset
interval that you specify , and that's
not necessarily the best way to do it .
Um You don't really need a lot of
resolution throughout the entire grid .
You just need enough to represent um
the way processes as they come towards
the shore line and through the inlet .
So let's go ahead and create a point .
So over here , actually , let me make
sure I'm in the right map data module .
You can always see that it's feature
objects . That would be the map data
will create a point and I'll zoom in
and I want a certain resolution through
the inlet . Um and maybe through
a couple of these . I don't expect the
ways to propagate this this far
up , but you never know how far they
might go depending on the size of your
bay . So let's just go ahead and add a
little bit of resolution in just to
make sure um they can get as far as
they need to . So once those are ,
those points are created , we can
select them individually or as a group
and select and give
them an attribute as far as the
refinement level and for , I'm not
exactly sure what the best choice might
be . So let's actually just measure
there's a measurement tool here on the
lower um
toolbar here , that's for computing
measurements and I'll just see how far
it is across the inlet here . So I
click first and then double click the
second , I see , it's about 660 m .
That's pretty wide . So let's make um
about 30 m sales across this
way , that could be probably a little
bit larger . Um So let me re select
these points .
Right click set the note attributes And
we're gonna choose 30 meter spacing .
And this is another thing that you
could play around with if you didn't
know what the distance across that was
and you wanted to try different levels
and see you know what the waves did
with the 30 m versus a 50 m spacing .
Um That's all things that you can
change and rebuild your grid . Just
like we've shown the last couple of
days for your flow grid . So with that
done , um let's go in like we've been
doing and under feature objects , there
is the same name , It's mapped to two D .
Grid . So everything so far has been
pretty much the same process that we
use for the flow except for the fact
that we must start in the water and on
the west coast , it's no big deal
because we've been starting on in the
lower left hand corner anyway , but in
all the other um , locations around the
glove , you , you need to start
in the appropriate location .
Um I do have one question . Let me see .
So Vincent is asking what should we do
with the grid if for example the waves
come from the east , southeast or the
southeast . We would have a part of the
grid starting from land . Um And that's
a good question
basically I'm gonna cancel
this basically the CMS
wave is a half plane wave model right
now . And so that means that the waves
Can come anywhere from about 85°
normal to shore and negative 85°. So
any range in this direction . Um they
would still propagate from the offshore
edge . But the the ways could be coming
at a very oblique angle . Um If you had
a situation where you needed more waves
coming safe from the southern edge . Um
I suppose you could um change your
orientation a little bit of your grid
and reoriented just so that you get a
little bit more of an angle . But I I'm
gonna let li wa he's the the wave
person um normal . Normally everything
we do is pretty much parallel to the
shore line and something like this may
or may not be the best approach . But
if you needed more of a direction from
that way , this would be one way to do
it . So I'm gonna go back to where I
was there
and we probably don't even need to
represent this entire grid in our grid
frame , mainly because the fact that
the ways will not propagate up into
this bay very far I would think . But
we can always try it first and see see
how many cells it creates . And then if
we wanted to cut back because it's
taking a long time . And we saw from a
first approach that the waves weren't
getting any further than say here we
could cut some of this information off
were mainly interested in the
interaction with the flow on the open
face and through the inlet as it's
going through these channels .
So like I said once again um we'll come
back in and um Go
Under Map to two D . Grid . We have the
same options as we did before . It
tells us what the origin is , what the
angle is . Um Some people try to clean
this up a little bit making it you know
even numbers something like this .
Um But it's not necessary . You can
You can go with whatever you want to .
We want to have a maximum cell size .
And yesterday we were using 180 m . Um
and we can use the same thing today if
you want . We could we could go up from
that . Um We will be using refined
points . So let's make sure that that's
selected . I'll enter these values
again and I'm just going to
leave the bias alone . Um Turning
off these check boxes for the inner
growth as I specify the other day .
That inner growth means that between
where I have the refined points , the
spacing will be kept constant as much
as possible . They will not grow larger
than a certain size . So for the depths
we're gonna specify using a scatter set
and select a certain scatter set that's
loaded and if you have multiple loaded ,
you want to make sure you choose the
right one . You want to make sure that
you choose the right date . Um If you
have more than one datum uh listed in
that dataset as well , we have an
extrapolation value and I'll just put a
certain value . It doesn't matter what
this is . Uh it needs to be something
um Higher than water , so negative two ,
something like that . Um would be
appropriate . I think I normally use
negative too on the West coast .
Um So
now we can click OK .
And
then I'm ready to click . Ok .
Again , this is the selected scatter
set has disjointed vortices and I think
what that means is that there's some
points in this grid that aren't fully
connected , but I think everything is
okay in the area that we're wanting to
look at . So I'll just say yes right
now and see how everything appears .
Um
Once we're through , I'm going to pause
for just a second and I'll be right
back .
Mhm
mm hmm .
Mhm
Sorry about that .
And I've got the I've got two unused
again , so I don't know what's going on
with the software . Um
Good boy ,
sorry about that .
It's always something with this , I'm
sorry . So
we should be going now . I hope
everybody can hear me at this point .
Um we'll get this under control for
next week's webinar , um
too many interruptions I think . So I'm
back looking at the new grid that I
just created . What I did was I went
through and change the
resolution
250 m through the inlet instead of 30 .
And that's a little bit more
appropriate here . We don't have so
many cells and that will free up um a
lot of the cells that were in the in
the whole grid .
So the next thing we do
is we can turn that back off again for
the cell edges . And so now we've
got a wave grid that
we're ready to use and that's pretty
much all you have to do . So it's it's
essentially the same process as we did
for the flow . We just need to make
sure that we choose a wave coverage for
the map module and also to
start the offshore edge
um for the wave grid . Now there are a
couple of different ways that we could
do this as well . So this is one method
for generating the wave grid . Another
method is to I'll go ahead and delete
this . So we could ,
if we have already created a flow grid
that uses variable spacing , we could
actually load that um
CMS flow grid . It's got a little bit
larger scale here . I'm just pulling
one that we've previously done . So
I'll lose my map data
here . So it's not in the way . So if
we have a flow grid and we want to just
use the same exact grid for our wave
grid it's no problem to do that . What
we can do is to click the
flow in the data tree ,
right click . And you can
um actually let's duplicate this .
So we're creating another exact grid of
this flow grid . And so we have now a
flow grid copy . And I want to change
this flow grid under data switch
current model . We can change this from
a flow grid to a wave grid . And so now
this flow grid is now a wave grid . If
you see at the top it shows Seamus wave
and this one shows CMS flow and
on the west coast , that's pretty much
all you need to do . Um one thing you
need to be aware of is to look at the I .
J . Trad and make sure
that the point of origin has the
positive I . Direction going towards
shore . So
um that would be for the flow grid .
It's in that location because it's
always in the lower left hand corner .
But for the wave grid it must be in
this location because it could be at
any one of these four corners . So
we've got everything situated . No
problem . We can rename this if we want
to to be waived .
So that works on the west coast case
because the point of origin was already
on the waterside . But what happens if
we're somewhere else in the United
States and
need to create this wave grid from the
flow grid ? Well , one way to do that
is once this is a wave grid . If the
point of origin was in the wrong
location , we could right click on this
wave grid and create a transformed grid .
So the transformed grid comes up with
this dialogue and I don't know why it
overwrote that . I can't see it now .
But no , you go back in there ,
I will create a transformed grid and
it's showing that presently the current
I direction is from
this direction , moving towards the
southeast . And if we
wanted to change it going in any of the
other directions , we could just change
this rotation and see what the
resulting direction would be for that
modification . And so if we wanted to
we were on the East Coast and we wanted
the ways to propagate from the east to
the west , Then we would flip this by
180°. We
would click . Ok . And what would
happen was would be that we have a
another wave grid and this
time the point of origin is in the
upper left and upper right hand corner
instead of the lower left hand corner .
And then we could save this grid as the
one we want to use . So that's
basically covering the two methods for
generating these flow grids , one
from the map module with refined points
and the other from an existing flow
grid , assuming that it is a variably
spaced flow grid . Are there any
questions on any of this that I've
covered ?
Um do I need to go back to
before I had the little glitch with the
audio and video .
Okay . If there are no other questions ,
I'm going to
move forward here . So the next thing ,
there's another question that says ,
how do we bring up the iJ orientation ?
That's this IJ triad that's located
here . Um that I got from the display
options . So its under display display
options and for the
Cartesian grid there are several
options here but one of them is IJ
tribe . And so you just check that box
and hit Ok . And it will appear
wherever the point of origin is located .
Alright , so I think I will go back for
just a second and go back over um
one of the options that we had talked
about before I got a little um
messed up with the audio . So let's
let's delete this back off .
I'll just close all of my grids here
and just move forward from the both
symmetry .
So I have got my
scattered data which is my both
symmetry and so
what we would do is we make sure that
we have a map coverage . So we create a
new coverage for the waves .
Okay ,
And select CMS wave as the model ,
click Ok .
And so now we select that coverage .
We can create a grid frame which is
this purple box in the tools . And so
we want to start in the offshore in the
deeper water and move towards the shore
line and then up towards the
other edge of the domain . We can then
select the grid frame and move it to
wherever we want to . So I'll just
leave it in this location . I don't
need all of this bay for waves and then
I've got my location here . Then I can
create refined points and I'll just put
a couple of refined points in places
where I think I might need them
similar to what we did on Tuesday .
Then I can select those points that I
created by drawing just drawing a box
or there's under edit . You can select
with the polygon . So you can click out
a polygon . If you have a very complex
order then you can right click and
choose the node attributes set . The
refined Level will say 50 m
at this point .
And Then we're ready to build the grid .
So it's under map to 2D grid which is
under the feature objects . Pull down
menu and we'll choose refined
points . We'll give it a base cell size .
I'm just gonna choose 200 at this point .
200 . Turning off the inner growth
and then choosing a scatter set .
Making sure we have an extrapolation
value and that's basically for all of
the locations that are not covered with
a triangle in the scatter set . That
would give a certain value to all of
these cells in the grid ? So let's go
ahead and click Ok at this point I got
a message like that but it's fine .
So now I've got I'll turn off my
scatter set . I can zoom into the grid
and I've got my wave grid with the IJ
triad and the exact location that I
need to . I've got negative two
used for all this back area because
there was nobody symmetry .
And I'm ready to move forward to the
next couple of steps at this point
since everything is how I wanted , I
could go up to the wave model and
either file save CMS wave and then I'll
ask for a file name or we can do like
we've previously done and save a new
project and I've just been using a
prefix of webinar for these um
saves like this . So I just tried that .
So if you look in the directory , um we
have a few files here , all starting
with the prefix that I just entered and
that contain these files which are the
wave files and they have different
extensions than the ones that we used
for the flow . Uh and that's so nothing
gets mixed up and we don't share the
same file name for different types of
data . Mhm .
So now that that's saved . Are there
any questions before I move on ? How
how to get spectral energy into the
dialogue .
I have a question . What would be the
difference between save CMS Wave and
save a project ? Well that would be .
And how these files are saved when I
gave that prefix for saving a project
it's saved everything that's in the
tree altogether . Um I have one file
called webinar that sms that I can load
in and load all of the files that were
saved at the time that I saved my
project . After you go through the
whole creation process and you have all
your both symmetry files on your map
files . You don't necessarily need to
re save those if you haven't made any
changes . And so a lot of times what
I'll do is rather than saving the whole
project which makes may take extra time .
I'll just save CMS Wave . And so
basically what that would do , it would
just save um the
webinar , the wave dot sim
and all corresponding other files . So
it would only really save these three
these four . Right now , once I add uh
spectral energy there will be 1/5 file
and there may be some other files that
it would save once you save the the
waves . So one saves all of the project
which means everything that's loaded .
And the other is just saving the wave
information . Mhm .
Alright , so let's move forward here
and um we'll go through the interface a
little bit um a lot of the options are
the same . You still have the data
calculator that you can do different
things with . Um you have CMS wave .
There's a few new options here and one
of them is a spectral energy . You've
got a model control a model check . You
have this nesting of grids which I'm
not going to cover today . And then you
can run the CMS wave as well . So under
spectral energy , that's how we
actually build . What forcing we're
gonna have on this offshore edge that
gets propagated towards the shore line .
And so this is where it gets a little
confusing to some people . You have a
numerical model grid that's here . But
you also create a spectral energy grid
as well . And so to do that , we need
to create this . Um These are the
defaults and normally we suggest that
you leave those alone . You are able to
modify some of these values . But for
the most part the default values are
what you need to use . So you just
click OK . And it creates this spectral
energy grid which is basically from
about 85° in one direction to
negative 85 and the other all normal to
your shorelines . And so your energy
will be propagating in from these these
edges . So once that's created , you
can do one of 2 things . You
can if you have the bulk
criteria which is the
um wave height period and direction .
You can create a spectral energy from
those discrete values . Or you can
actually take information from a wave
gauge that may be a seeded Bowie
or NDB sea buoy some information like
that . We can we have certain utilities
that we can use to take that
information and oriented in the right
direction and get in the right format
for reading into S . M . S . But the
first step I want to show is to just
generate a strict spectra from wave
criteria . So we just click the button
for generate a spectrum and we get this
dialogue . Um so it asks a couple of
things . There's a few different ways
for generating the spectral energy ,
the defaulting tm a shallow water ,
there's some others that you need a lot
of other information for . But just for
a generic wave , we just recommend
using the tm a generation generation
method . You would specify
what the offshore depth is um for
your grid and I'm not sure exactly what
this is right now . I can go back in in
a minute and find that out . Um
But I think it's around 60 m or so . So
we can put that and then we start
listing these um lines of discrete
instances of waves . So our wave model
doesn't continuously run from
through time . It's actually modeling
one point in time every time it runs .
So what we do is we try to get
representative wave conditions for
certain time periods that we're wanting
to stimulate . So this first
one you can give it an index and it can
be any number value . Um Sometimes we
put in a kind of a code so that we can
tell what time this particular wave
condition may be equivalent to in real
time . So it could be something like
2009
november 30th At 000
hours , something like that . And
so each in individual time like that we
would go through and then to us it
would appear that that's what that time
was . This is a separate time . This is
another time . You give it a certain
angle and that angle would then be
shown in the dialog so that you can
make sure that the the projection and
the orientation that it's coming in is
correct . If you're pulling in values
from a file , say in
from Excel spreadsheet . Um sometimes
those directions are for different
conventions and so you would look and
see what these angles and make sure
that they're appropriate for what we're
doing . So um there's a shore normal
oceanographic neurologic um
and Cartesian and you see these values
for the angles are changing in between
those . So you would find which one is
representative of that direction and
then be able to change back to shore no
more whichever one you wanted to use ,
then you can put in height and meters
and then some kind of a period . I'm
just making this up at the top of my
head but you would have some idea about
your wave climate for your given region
and know what the ways that you're
trying to um to model . So
then there are a couple of other
options here for gamma and an end .
Sometimes this information comes from
the wave gauges . Um if you don't have
that information , there's another
button for spectral defaults that you
can actually come in and it gives um
a value for each period that you can
use . It's a typical value and then you
can just keep loading these once you're
through , just click generate and then
you will have a list here that has all
of the points that you just created .
And um the first one and you see a
representative energy
that you can look at and you can do the
same thing as you can with the normal
grid . You can change and look at it ,
color field , um specifying a range ,
this ranges and hurts . Um you can
actually rotate this . There's a
rotating options so that you can pull
and look at the what the spectrum looks
like the shape . Another thing that you
could do if you didn't want to do that .
There's a couple of plots that you can
get that come up for the energy versus
frequency and direction and uh that's a
little bit more information . So
um are there any questions about
specifying individual wave criteria
in this method ? This method before I
move on to the other .
There's one question that says CMS wave
doesn't read in time series like S . T .
Wave in swan ? Um S . T . Wave is just
like CMS waved . It is a steady state
model . So it's reading in individual
um wave criteria that
it runs . They may have um
a file that has all these in there and
we'll read those in um CMS wave and S .
D . Wave file format at least for the
half plane model is almost identical if
not exactly identical . So
yes it can as far as swan . I'm not
really sure . I've not run swan in a
long time . Mhm . But you're not
doing your ways through time , you're
doing them for one in particular time .
Um So that's that's kind of how we get
it . We would like to um at some point
be able to have a better representation
of the time as an actual date . So
that later on when we get into the
steering we're running these waves when
we're when we want to And rather than
out of specific interval . I hope that
answers that one question .
There's a question on directional
spreading . How is it determined that
basically is when we
created our grid are spectral grid
I'll delete this back out and create it
again . This frequency
distribution you can modify but not the
angle distribution . And so
the directional spreading is governed
by these values here . Five degrees
from a given minimum and
maximum and right now you're not able
to modify those .
Mhm .
Any other questions before I move on to
the next method .
Okay well there is another way
to to handle the waves . Like I said if
you have a wave gauge
or some other buoy that is out there
collecting wave data . Um There are
several different locations and I don't
have them all listed here but basically
one location that we can go to
is there are seated buoys , there's n
DBC buoys um
and so there's various locations where
you can go on the internet to grab
information for your waves .
Um
trying to figure out remember exactly
where these gauges are located
but once you pull this information
for these gauges um it comes in in a
certain format
it's gonna take a little bit to get in
there . I'll just select one of these .
Um you can view the details on these
gauges
and then you can actually download the
information and that that information
comes in and I have an example of one
of these Right here . This one my show
on the screen is 4606 and we've already
got the data for a different gauge ,
downloaded this for a time period in
2007 but I'll open this up so you guys
can see um
what that format is and it's very
hard to read . So if you had to go
through this and pick out what the wave
period , the wave direction and um all
the other information for this
particular time , um it would be very
hard to do that . So we've got some
utilities that are
available on our website and I'll go to
that real quick . Um
basically you go to our wiki page ,
we have a documentation portal on the
left and on the right and the
columns over here , there are some
utilities
and we list a lot of these utilities
and therefore various things that I'm
not going to actually cover today . But
some of them are listed down here for
wave transformation . So we have
different utilities to take Wave watch
three spectra and formatted in a CMS .
Wave format a whist wave C dip and nd
bc buoys . So you can download these
programs and run them with the
data that you download from these sites
and then wind up with files that you
can load in to smS
that are represented representative of
that wave . Um
Let me see . Let me go ahead and do
that real quick because I don't have
the energy file here for this one .
So I'll go back in there again . This
is N D B C and I'll download
this file
and then I can run this program and
we've got some direction on the wiki on
what the steps are for this . But
basically um you'll go through and
you'll give it a name . In this case
I've got 46022
and then you give it a starting time ,
an ending time . And or you can just
specify all mines for just through the
end of the file . And then you can
actually go through and pick out if you
want hourly or three hourly , six
hourly data . Or if you want everything
that's in the file , you can just enter
a zero there . I'll pull out hourly
data . So I'll just put a one and I'll
tell it to write a CMS wave spectral
file . That's the option number two .
We can give it a file name and I'll
just name it um
humboldt dot N . G .
And then it's asking for the local
shoreline orientation in polar
coordinates . And um this is
something that you're , you would get
from your grid . Um You would
find out what the orientation is , you
could right click um Mhm .
Actually it's under file , get
information . There's a certain
orientation that it gives here .
There's 3 28.91 . But if you look ,
have saved your grid and look in the
file um there's an angle
Right here as well . So that's the
angle that you would put in there
3:32.0454 . So I'll make a copy of that
and enter that . Then we get the
offshore buoy depth and I'm not sure
what this exact one is . Let's see if I
can find it real quick , I think I
closed that page .
So the offshore depth for this
particular one is 674 m .
So I'll put that in there
and then what it's asking now for is
the C . Word depth , Which is at the
edge of the grid and we have 60 m .
All right . You can include wind if you
want . Or skip it . I'll just skip it
in this point And it will ask for how
many frequencies I'm choosing . 30
frequencies .
And so it's finished now and it's
written some files out in your
directory . And the one we're mainly
interested in is the one with the dot
PNG ending and the
format looks like this , which is
exactly like the format that S . D .
Wave uses for its half playing model .
And you've noticed that the um index
here at the beginning of this line is
representative of the of the year and
the date . So this is 2000 and seven
december first at one o'clock in the
morning . So at this point we
have the energy file and we can go into
spectral energy instead of building a
grid , we can actually import this
energy files . We'll find it .
And that's the one I just created .
I'll open that creating a new spectral
grid
and it lists all of the information
that we requested that's in that file .
So if we go through we can look and see
what this looks like . Um
So you can see that they're not
symmetric um wave
spectrum . And you can tell that these
are real spectrum that came from a
gauge out here . And so you would want
to just look at this and this would
also show you whether the directions
are correct . Um and things like that .
If you needed to edit the spectrum ,
I believe you can right click and go in
and edit and it has all the information
for those particular ones from the file .
Are there any questions about loading
importing spectrum from these various
gauges ?
Okay .
Um One question was about the wiz hind
cast database . Um As you see there
is on that wiki utility page
um Let me go back down there
again . There is an option for whist
wave spectra and these other four
options . So if you get the information
from the West folks you can use that
information to force CMS wave .
Absolutely .
Um Hong hei is requesting to
show you guys something so I'm going to
give control to him for a second
but I guess he's not gonna do anything .
Um
Sorry guys . Um Exactly sure . What's
going on here ? I'm gonna take control
back .
Alright . Um So are
there any other questions before I move
on to the next section ?
It's pretty straightforward . Um We
tried to
be able to handle information from most
of the grids . I mean gauges around the
United States . Um
I'm not sure if we handle any gauge
types or formats for those of um
internationally . So but this
is basically how you get this done .
Now , once that's loaded we have our
spectral energy loaded , we can go in
and look at the model control . I
showed this briefly the first day , but
basically we have options to specify
a forward reflection , the backward
reflection . So that's that would be
when the waves come forward and hit
some um structure . Whether or not
the waves could bounce either forward
in the domain or backward in the domain .
There's some options there .
Long tool here . So we go to model
control . There's also a muddy bed
which basically the user can set up
with some parameters that
affect um how the waves
propagate towards the shore in those
areas , you can select different wave
breaking formulas with the default
being the extended go to formula which
is uh normal for most of the cases ,
but you can try different ones if you
want a little bit different result and
you can tell it to output either the
breaking indices or energy dissipation .
Normally , if you're going to be
running with the flow model , then the
dissipation is what you're you're
wanting to get out of this . So that
will feed directly back into the the
flow model . Um We have a bed friction
and right now it's set to none . So if
you want to represent some sort of bed
friction , then you would specify
whether it's a friction coefficient
or based on the manning criteria . Uh
And various ones of these . We have a
constant over the grid . We also have a
variable and that requires a data set
to be loaded into the data tree . So if
you want a constant um bottom friction ,
that's what you would use um various
solvers and these are explained a
little bit in the wiki um and maybe
covered next week a little bit in more
detail . There are
um wedding and drawing that can be
included , a nonlinear wave effect .
Um You can turn on run up and that's
basically as the ways are making their
way towards the shore . They're gonna
run up onto the beach a little bit and
you can get some of that effect and
pass that information back to the flow
model . If this is turned off , then
basically there's no wave dissipation
radiation stresses or anything After
the waves Get to zero water level ,
anything above that , there's nothing
no action . There's an um
simple in for gravity wave effect
that's been added recently . And you
can also choose to change the
diffraction intensity a little bit if
you need a little bit more um or less
intensity and turn on currents and you
have to pass this information .
Normally , this is done automatically
in the steering module , which will
cover either later today or tomorrow .
You can turn on a spatial wind field um
adding in winds . There's another way
to do this and I'll go over that in
just a second and then you can also add
in a search file . We can pull in wave
source whether we're coming only from
the spectrum that we loaded from that
gauge or by the criteria .
Um There's some parameters here that we
can specify for each one of these
um adding in a title elevation , that's
basically what this surge is , spatial
surge , there is wind that we can
specify , wind speed , direction and
then that same title elevation , you
can have a combination of both the wind
and the spectrum and then you can also
change this to a simplified formulation
that um changes
the gritting from the spectral energy
gritting from this 30 x 35
grid Down to a seven x 5 grid . So
you're kind of making a little bit more
efficient by reducing the number of
bins that it's got to go um but it's a
much faster answer but it may not be as
quite as accurate as it needs to be .
So the output , I I guess
what I need to say about this also is
the simplified formulation might be
good for the first initial attempts to
um run with the waves but for
an actual project or the final answer ,
you probably would want to go and use
either the spectrum or the spectrum and
win options um just to make sure that
all the possible information is
captured that you need to there's some
output options , turning on the
radiation stresses . Um Normally this
is automatically done for you for the
steering module um and then seeing
swell information , you can output that
as well and you can now put in um
either ask you or X . M . D . F . Um
The X M D F is just a binary format
that makes it a little bit easier to
load these solutions and
that's basically the model control
dialogue here . Are there any questions
about model control ?
I've got one question about what does
the c slash swell control do ? Um
And I'm gonna let lee wanna write you
an answer . Maybe he can forward that
to the entire group . Um That's a new
option that I'm not exactly familiar
with so I'll let him answer that and
if he can choose to share that with the
entire audience , that would be great .
And I learned something too .
Another question , is there any way to
have a scenario
manager for model control if you want
to have different input conditions
without having to save many copies
basically all of the input conditions
that you want in the model control . Um
As far as the wave spectrum , I think
that's what you're asking . Um
All of that is kept in one file . If
you're talking about various ways to
have different types of running
different conditions with different
reflective coefficients and things like
that . The answer is no , there's no
real way other than to create multiple
copies . Each one taking on its own
either name or new directory , so that
you can keep track of your different
changes that you've made
um As far as being able to output the
spectra , the I don't think that
there's a way to output the spectrum on
a global way at this point , you can
only look at what's being forced on the
input side .
Okay ,
Well if there are no other questions
for right now , um we can come back and
answer a couple more A little bit later .
It's a little after two .
I want to go ahead and go into the next
little portion actually , we're way
ahead of schedule today despite all the
few glitches that we've had . Um but
so let's go into actually going over
how to run both the flow and the waves
together . Um and that's done
for right now . Um there are two ways
in sms 11 point oh , to do a
steering . And it's basically ,
if you are using and explicit
grid , explicit flow grid
with waves , you have to do it one way
and if you're running the implicit
model with ways you have to do it a
little bit differently . Um So let me
just load in a um a
flow grid real quick . I think I
might have one in the same um directory ,
I'll just get rid of what I created .
Okay in the directory , I have
flow underscore hb dot cm cards
and I have a wave hb dot sim .
And so essentially what you would do is
you would load both the flow and the
wave grids . You would want to make
sure that your wave grid um is a little
bit larger or the same size of your
flow grid . Um That would be the
preference to do that . If your wave
grid is a little bit smaller , that's
fine . But you have to decide what
to do at the edges of your wave grid ,
say the wave grid ended at some
portion . You'd have wave action action
inside and then wherever the wave grid
stopped , you'd have nothing going on
the outside . So you have some
disparity there . So what we tend to do
is we extrapolate the values that are
calculated inside the wave grid and
force them laterally , uh some distance
and you can specify what that distance
is or you can let CMS um choose
that automatically . So basically , now
that we have the flow grid loaded and
the wave grid loaded , we want to make
sure that in each case we have our
model control set up exactly how we
want to . Um So we'd have that , we'd
make sure we saved the grid , we'd go
into the flow grid and look at the
model control , make sure our
timing and the time steps and
everything is okay . Okay . And in this
case we're using the implicit scheme .
So I'll go over the method . Um The
method for that . I'll just look around
and make sure that everything else is
kind of set up . Okay . I need to
make sure whether or not I have a
forcing condition assigned . And I do
it looks like it's just a a constant
time in this case .
And so the next step would be to um
save your flow grid and then you could
go to data and there's an option for
the steering module . And so under the
steering module option , there are two
choices that you can make when you have
CMS flow and wave grids loaded .
one is CMS flow with a
little to and from uh CMS wave . And
basically this is the option that you
would use for the explicit model .
And then the CMS in line is what you
would use for the implicit model .
Um And so since I had specified in the
model control the implicit model to be
used With an implicit time step of 600
seconds , I'm just going to choose CMS
in line and click next . And there's a
few options for you to choose . And so
depending on what you have loaded in
the data tree , you can make sure that
you're using the right flow grid and
then use the right wave grid . And
you'll tell
CMS to run every X number of hours
and this interval needs to be
represented in how you specified your
spectral energy dialogue . So I'm just
gonna go back for my own benefit and
double check and see what that um is
loaded . So let's go over here to waves .
Okay , wave spectra and right now I
only have two times loaded . I'm just
going to get rid of this
and import that spectrum again .
All right . And these are set up for a
certain time . Um 2007
December one . And so what you would
want to make sure is that both of your
your flow and your wave grid are set up
with information for the same time
period . Um That's just a manual check
that you're gonna have to do . So I'll
go back over to the flow and if you
remember the the condition I had out
here was just a standard looks like an
M . To tide of some sort . Um So it's
just a made up tied but normally you
would be getting this information from
either gauge of some sort that
specifying the water surface elevation
or using tidal constituents . And you
want to make sure that that matches up
with your wave information . So also in
the model control , you would want to
make sure that your starting date is
the same as that is what you're trying
to use . So I think
everything else is situated . Okay ,
I'll come back and save the flow . I'll
just go ahead and save everything under
a new project . I'll just call this
webinar to just so I don't make any
different mistakes here
and now I should be able to go under
data steering module , CMS in line
and select that was hourly data . So I
changed this to every one hour and all
of this is great out because we're
passing as much information back and
forth as we can . We don't necessarily
have the ability to change these
anymore for the implicit , I think
these are still available for the
explicit steering . So let's
start . We have just to make sure
you're running with the wave model
every hour . And so Mhm .
It's going through and Running the
waves 1st
and it's a big wave grid . So it may
take a few minutes to do that .
Let me actually go back and I'll select
the simplified formulation . And so
this will go a little bit faster for us
for right now sol abort
go to the wave grid ,
mm hmm .
We say that go back to the flow
model and then choose steering again .
And so now you see the waves are moving
through much faster than they were and
the answer is still approximate . It
may not be the best , but it's very
close . Mhm .
So , what this is going to do while
it's actually doing it , we've
specified a number of wave conditions
and it's taking the first one , which
is what it just ran there and it's now
calculating a distance and
extrapolation distance automatically .
And that's because CMS is doing all the
mapping from the flow to the wave grid
itself . If we did this from the other
option , Sms would actually do all this
mapping back and forth for you . So
this will take just a second , but it's
choosing the first two wave conditions ,
it will run those and then it will
actually run the flow model Between
those two times . So when the flow
model is over for that hour , it will
run the third wave and then run another
flow period , it's a little bit hard to
describe . Um I may be able to find
a power point that shows that a little
bit more and I might bring that in
tomorrow .
So this um calculating the coefficients
for the extrapolation is a one time
thing . As long as you don't change
your your flow grid or your wave grid ,
then these values will only have to be
calculated once the next time you run ,
it will actually find those written in
the directory and use those . And this
can take a little bit the very first
time to run this , I
should have tried this ahead of time ,
so we didn't have to wait .
Okay ,
but this may take a while . Um I'm
going to just stop this right now um
because I have no idea how long this
particular part of it is going to take
and show you how to do the explicit
steering . So I will abort this
and I'll go under the flow model and
change too explicit And then I must
change my time step because there's no
way the explicit model is able to run
at a 600 times step . So just to be on
the safe side , I'm going to run with
the .75 2nd time step .
Um I'm not exactly sure what should be
used here . It's just you run
something and if it crashes you try a
different time step a little bit lower
and hopefully that runs a little bit
easier . It's a little bit more
difficult to to figure out what the
appropriate timestep is . So I'll
save the grid and then I'll
go back under data steering module .
And instead of choosing the second
option , I'll choose the top option and
all of the information is the same . I
want to pass information for currents
and water surface elevation to the wave
model . And also from the wave model .
I want to pass the wave data to the
flow model . And then I'm choosing to
extrapolate um some
distance in our case that they're
exactly the same size but you could pet
um some value here . It's not gonna add
any type of computational time for this .
So I'll extrapolate that out
and start the model running and there's
a little bit different dialogue because
SMS is handling the mapping . And so
with this first dialogue is the first
wave run . You're looking at the
average wave heights as the waves of
being propagated from the offshore
towards the shore line . You can see
where it broke and another smaller
break and then a
second wave Condition is going to be
run and it'll show that one .
So it's similar to how it was just
shown a second ago
and now that both wave conditions have
run , it's going to start running the
flow model . And so depending on
the time step that you have and the
length of time between the wave
intervals , you'll see a CMS flow
progress down here And so now it's
finished eight
as this is running . Um I'll just look
in the directory where I'm running and
you'll see a couple of files that
have been created . So running the
explicit model creates one set of files
for the first wave run another set of
files for the 2nd and 3rd and 4th . So
you'll wind up with many files in your
directory . Um There's no way around
this at this point . It also gives you
a copy of the screen output ,
what normally would be showing on your
command prompt . And then also there's
another file that says other
information about the running of the
different models , the wave model and
the flow model . And if there was a
crash , one of those , one of these
files will have that information .
There's also an informational file from
CMS that basically says
what the setup was and then as it's
running , it actually updates this file
while this is running . Are there any
questions that we can answer quickly ?
I'm gonna let this run for a few
minutes and then we'll have something
to look at um and pull in and see the
different types of file outputs .
Okay ,
let's be finished in just a second . Mm
hmm . And tomorrow we'll get into a
little bit more of the post processing
so we'll load some solutions and be
able to generate
animations for those . Be able to
save the information out to a K M . L .
File and be able to look at it through
google earth . Um , there's ways to
look at um
extracting information from your
solution for given points and so you
can look at the water surface elevation
curve and pull in
and look at that compared with an
actual measurement .
So this will be finished in just a
second . Um and I will stop it and then
I'll pull those files in and show you a
few more of the various options for
looking at the data . It says that
actually the the run was unsuccessful .
Um and so we'll have a chance to figure
out what that is . So if we look at the
CMS diagnostic file
saying cannot create hot start info
data set . Um
that's interesting . Um , I must have
had
but starting turned on in the model .
So I tried to write out a hot start
file at one o'clock . I mean after one
hour and it was unable to for whatever
reason , I'm not sure what that might
be but it looked like the actual run
finished correctly . And so we can
actually load this solution file . This
is a solution for the flow grid as we
see . So we can
come in and look at our flow
and it's actually loaded our results
for us . So we have two different
things that we chose to look at and one
of them is elevation , water surface
elevation and the other is current
velocities and you can see down at the
bottom that we have three time steps
available to scroll through . One is
just a zero time step , One is after 30
minutes and then one is after one hour .
And so what we're seeing on the screen
is the actual water surface elevation .
And I've got a large range because I
have saved that for my um depths . So
what we can do is right click on this
data set and choose to change the
contour options for that data set and
show them however we want . So we can
look And I'll just go from a
symmetric range , say
-12.5 .
And so we can see deeper water
in the ocean side and a little bit
shallower increase on the
Bayside . And so if you had a long
series here you can scroll through
these and look at how the the tides are
propagating in and out of the area .
Um I'm gonna change this a little bit ,
I'm gonna turn off my cell strings and
some of these other symbols and
actually turn on the vectors . And then
I can change how the vectors show up .
So there's various options here . One
for every note in the grid , which that
can get very busy , what I normally
chooses on a grid . And then you can
define what spacing you want . So
either 15 or 20 pixels apart
and then I'll show in a minute what the
Z offset will do for you . And then you
can show a different range if you want
From 0 to 1 . Um
and then how the arrows show up . So I
just choose this for right now and
we'll see what they look like . And so
if I zoom in a little bit , you notice
a lot of this . These arrows are hidden ,
not quite as easy to see . Um If I go
back into my vector option ,
I can change the Z offset to be two .
And basically what that does is it
raises the vector field two m above
the elevations of your solution
here . So what was happening was the
tides were above the mean sea level ,
but the vectors were represented at the
zero level . So they're kind of
covering up these vectors a little bit
well . So by lifting those vectors ,
you can actually see everything that
you need to , so if we had a longer
time series , we'd be able to see a
little bit better action . What's going
on here . This is early on in the
solution and so there's not much going
on at this point . Um the current
through here is right now it's only .4
m/s . Um through humboldt bay we
often get above 1 to 1.5 m per second
through here um during
some particular time . So
um are there any questions about
looking at these
elevations ? What I'm gonna
show now ? Um is sometimes you don't
want to look at the water surface
elevation . You want to actually see
the magnitudes of the current speed .
So you can find the areas where the
flow is the strongest through certain
areas . And one way to do that
is to right click on the vector dataset
and there's an option to split the
vector dataset into two different
scholars and so we'll choose that . We
can choose magnitude and direction and
give it some kind of a prefix
and then click OK . And we'll go
through the entire Dataset . It'll
split them into two and then you can
look at the magnitudes along with
the velocity vectors
And once again I've got it set between
zero and 20 so we can modify this .
It's some very small number at this
point so we can go from Say
0-1
and look at them as a color fill .
We'll click Ok and what I normally
like to see . Um
mhm I don't know why these are all zero .
Actually this looks like a bug that
we found in the interface .
I'm gonna choose a different way to
develop these magnitude and directions
um and see if that does a little bit
better job here . I'll delete these off
so far . Right click and delete that .
I need to write this down . Report a
bug .
All right . And so what I'm gonna
choose to do . There's another way to
do that . And that is under the data
dataset toolbox . There's a vector
to scalar and hopefully this one works
a little bit better . So you would
choose vector to scalar , choose the
actual solution and then you can choose
any of these options and I just want
the magnitude
and I'll give it a prefix
and hopefully when it comes back we
actually have values here
and we don't . Okay , so I I found some
issue here with this version , yours
maybe working . I have um
Version revision .07 of SMS 11 .
I want to say this was working at some
point earlier . Um but that's the
basic process that you would go through
to do that . Um
It's a little aggravating
and there's various other things that
you can look at as well . You know , if
we had a run with sediment transport
turned on . Um there would be other
options available to us . That would be
um concentration . Sometimes the
capacity depending on what type
of features
that we selected in the model control .
And so you can look at all that
information and then build an animation
if you need to .
There's one question that says when the
model was running an explicit mode with
CMS flow to CMS wave . And the wave
profile was shown on the screen
which was read in the CMS flow . Where
was the wave profile taken from within
the grid ?
I'm trying to understand the question a
little bit better here . Um
mm hmm .
So basically we the information that
gets passed from the wave grid too ,
The flow grid . Um
If I go into that steering module
again , it's passing
the current , the flow velocities
and water surface elevation to the
waves and the wave information back to
the flow . Um it's also passing if we
look at the files that are used um
The radiation stresses actually the
radiation stress gradients are passed
uh and applied to the flow grid as well .
I don't know is that answering your
question , Lauren ?
Okay . So I see what you're saying .
The the screen that was showing the
as the waves propagated from the
offshore to the onshore . It was it was
showing a value for the average wave
height as it moved forward . And that's
taking every cell in that row and
averaging the value and that's the
value that it's showing there .
Okay ,
so
is there anything else that I can cover
here ? Let me um go over and show it's
gonna be a short one but show a little
bit of an animation for um
this run and how to set that up . Um
One thing that you can look at down
here is we have this odd time
associated with these time steps and
basically this is some number of
hours after some
arbitrary date that SmS has used . I
think it's a a normal I mean a date
that all the programs used as a
reference . But what you can do is you
can right click on this window and set
your time settings
and so you can change to show from
relative time to an absolute day and
time and this kind of shows what the
difference would look like at the
bottom there . So this is what I
normally do . So I know exactly when
each one of these snaps is for and
then when you go under data into the
film loop , you have a couple of
options here . Um you can create an A .
V . I . File which is basically just
your standard animation file . You can
give it a name or if you don't give it
a name , it will default to sms dot
A B I . You can also output
this to a K . MZ file so that it can be
read into um google Earth . So I'll
just try both of these real quick like
I said , it's going to be very short .
Um and we want a transient data
animation . We'll click next and then
you have a chance to go from the
starting time to the ending time .
Change the number of frames change how
uh frequently you want the output . If
you want to see every hour instead of
every half hour , you can do that . If
you want to see every quarter hour
instead of every half hour , you can do
that as well and it will interpolate
between the two and give an actual
value for those times . I'm just gonna
leave it with these uh standard ones
here . You can change the time zone to
whichever uh area you're working with .
Um Actually this is very new . I've
never seen this before .
So for central standard time we've got
um Chicago .
We're gonna be actually in um
pacific standard time , Los Angeles .
I'll click next and then it goes
through and actually goes through and
builds the animation . Well there's
another step here , you can turn on a
clock that would appear somewhere in
your um screen . So you would show a
progress bar , there's various types of
horizontal or a vertical . You can
change the size of those .
You can actually show the time
underneath there some other information
and then finish will generate the grid ,
the animation .
And so it actually starts after it's
finished starts the animation . Um
And you see the clock where I chose to
put it actually is over the legend . So
we would want to move that at some
point to a different location . But not
only does it build the animation since
I asked it to , it went ahead and um
save the cam Z . And open it up in
google earth that I have loaded on my
machine . And so through
this you could actually go through and
see the various snaps through time as
well .
So let me regenerate that animation
real quick . I'll turn that one off .
It's now sees that there's a S . M . S .
A . V . I . In the directory and it
renames this one to sMS to . We can
keep that and then I'm just
going to choose to put the clock in the
upper right hand corner instead .
Alright . And you notice this goes very
fast , there's only three frames and so
you can change the speed with this abc
player that they have built in . Are
there any other questions so far about
what we've covered ?
I don't necessarily want to get into
any new topics at this point . Um
Tomorrow we'll go a little bit deeper
into post processing
and um we'll have larger files to work
with . We'll get into comparing some of
the output with
measurements . Maybe get into
statistics a little bit and then we'll
probably show a little bit of some of
the newer features that are Coming in
um the next version of CMS and
SMS 11.1 later this fall .
So go ahead and start asking any
questions if you want me to go back
over anything . Um I'm able to
do that with . No problem . Okay ,
Alex or anybody else , is there
anything that you think I should go
over ? If you could let me know in the
chat window , I can do that .
Okay . There's another way to
run the CMS and I showed this
a little bit yesterday um
which is to run the maybe not yesterday
the day before , which is to run the C .
M . S . From the command prompt . You
can't really run the explicit model and
the standalone wave model from the
command prompt and still get the
interactive steering . But you can
do the steering with the implicit wave
model since everything is in line . And
so what you can do is go ahead and into
the model control . We'll change this
for implicit um we'll change
our hydrodynamic timestep and I'll
actually turn off this hot start output
file . And when you run
steering for the implicit model
it writes a couple of extra card files .
I mean a couple of extra entries into
the parameter file that basically
says that you want to run with waves
And at a certain interval . And so what
you would do is you would enter these
cards into the advanced section
um adding in the steering interval .
Let me see exactly what the names of
these cards are .
There is a list of some cards in the
wiki that are basically what is
contained in the control files . And so
if we look in the
sim card's file , all of these cards
are listed in that and what we would
want to do is add a couple of more into
this parameter file . So to do
that we add a card into
the advanced section , Basically saying
we want a steering interval of one hour
and then we'll add another line that
says the CMS wave sim file
and give it a name . And so we want to
name this particular file which is the
same file . That's the actual parameter
file for the waves . So we take that
name and put it into this blank
and then click OK when we save our
model .
Yeah
that information gets written to the
corresponding parameter file
so I can look in this and now at the
bottom of this we have Uh two extra
cards . And so now we're able to run
this from a command prompt . And so
just do that with start run
will change to the directory we need so
it's this one so I'll switch to the F
drive
and I'll change directories to
that location
and then we need to make sure that we
get the right execute able
so I'll find in the in the
folder The program files where
SMS 11 is stored looking in the
models , the flow directory ,
The implicit 64 bit on my computer
and we'll copy these two files from
that directory over to where
we're wanting to run from .
And so then we can actually type in the
name , hit the tab key until we get
the right name in a space
and then we're looking for a certain
parameter files . So that's called
webinar to flow cm cards . We can do
the same thing . Webinar .
So at this point we're telling CMS
to look at the CME cards file and run
with whatever options are specified .
And so as we do that , it's
seized those cards and is now running
the wave model a couple of times , like
we did earlier , a lot of times . It's
just as easy to open up the the card
file and then hand edit it and add
these two cards in there directly ,
especially if you're comfortable with
running from a command prompt . Um
Thank you . You don't necessarily have
to do everything from within the SMS
interface . I think we brought that up
the other day that it's easy to change
these cards here and there .
one other thing I could show is um
how to bring in the wave results .
So once this is done , um with the
first one , I'll stop it um
and actually load in some of those wave
results . I realized that I showed the
flow but I didn't actually show the
results for the waves . So let's just
take another second or so
Yeah ,
no , I'll just stop it . Um so
when we have our uh runs complete ,
that happened because I actually
overwrote the solution just then .
So I load in the wave results and this
is from the standalone wave run . And
what we can do is just pull in ,
you can select the wave grid
and then if you just want to look at
the wave results from the first one ,
you can pull those in um directly into
the interface . As long as they line up
with the grid that you have selected .
Um Same thing goes for the vectors , we
can go in and change these vectors um
looks like I have to lift them up a
little bit higher Because the waves
started at two m . So let's just try 10 .
I mean five . Okay .
And we'll choose the entire range for
the height . And so
what this is showing is the ways and
the direction . We don't necessarily
get a lot out of looking at directions ,
but we can also look at the period of
those waves as they move towards the
shore line and into the bay . And we
can also look at the wave height . And
so if I zoom in
as we run our cursor over the screen ,
You can see that the wave height here
is one m and it works its way down
and then chris again . So let's change
the , the range here
and this should show it a little bit
easier . And so you see the
green colors are about one m up
to some bluer , you can see
where they're peaking a little bit in
different areas , You see the
directions and then as it moves through
the waves moved through the inlet , the
directions change a little bit and the
intensity of course changes .
One thing that's lacking right now is
common combining all of the
um waves together when they're
run in the standalone method , all the
ways they're in their own files , their
own directories , and we need to find a
way to get those combined . And so in
the next version , when you bring these
in there all together or will be
altogether .
One question is when you begin steering
model module , the wave and flow grids
must be similar in size , larger wave
grid must the grid spacing be the same .
The answer to that is no . Um the
spacing is totally independent of each
other . You do want to have a large
enough spacing to represent what you
need . Um It looks like Alex has
already answered this , but um
that's not necessarily the case .
They don't have to be the same
as far as the wave radiation stresses .
You can also pull in those as well . Um
let me shrink this back here .
And so those are carried in the dot R .
A D . Extension . And so you would load
those just as you did the wave and now
the wave radiation stresses are shown
here . Um you can change the way
those um vectors look .
So let's just look at all of them .
Um
You can change the length for them .
Okay . That wasn't a good idea to look
at all of them . So let's go back and
um change the skin .
Mm hmm . All right . And so now you see
the areas where um the radiation stress
is our greatest in the areas where it's
breaking where its nearest shore , um
reflecting things like that .
So hopefully that answers all the
questions for right now . Um I'm gonna
go ahead and wrap up for the day and
see you guys tomorrow for the final day .
Be thinking of any questions that you
might want us to answer .
Um Since this will be the last day of
the basic if you're not showing up for
the advanced or if you didn't register
for the advanced webinar and you want
some answers . You can also just email
us directly . Um I gave some
emails earlier email addresses in that
first set of presentations . So just
email us directly or just find the
answer the questions . I mean ask the
questions when we get there tomorrow or
if you're gonna be here next week ,
then you can ask some extra questions
then . But if that's all we're gonna go
ahead and wrap up for the day and I'll
see you tomorrow .
Thank you guys ,
er discovering , developing and
delivering new ways to make the world
safer and better every day