open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello. I apply the changes according to post #749.
My problem is velocity.

The velocity is high. The problem was not solved by changing the physical parameters and solvers.
I am attaching the files.

Thank you for your advice.

Sina

Hello Sina,

Hard to help you without at least an image showing your issue or having the geometry file + atmospheric file to try to reproduce your issue.

Anyway, I would advise you to solve your issue step by step by trying usual features or simplifications of your TELEMAC-2D model:
- no wind + classical surface elevation variation with 1 value per liquid boundary,
- constant wind + classical surface elevation variation with 1 value per liquid boundary,
- wind varying in time with the same value all over the domain + classical surface elevation variation with 1 value per liquid boundary,
- no wind + your own tentative implementation to make the surface elevation varying in space and time,
- constant wind + your own tentative implementation to make the surface elevation varying in space and time,
- wind varying in time with the same value all over the domain + your own tentative implementation to make the surface elevation varying in space and time.

By doing this, you may isolate what may create what you assume to be too high velocities.

Hope this helps,

Chi-Tuan

Hello,
Thank you very much for your reply Chi-Tuan.
By changing the things you said, the velocity decreased.
The bathymetry results of my model are from -39 to 3. So I set the following options as follows:
PRESCRIBED ELEVATIONS =1;1
INITIAL ELEVATION =3
The results at the boundaries do not seem to change after the 4th day. And the velocity vectors at the boundaries are in the same direction and without change.
Where is the problem?
(See the attached file).
Thanks
Sina

Hello,
Try VELOCITY DIFFUSIVITY = 0.000001 and tell me what happens

Hello,

thanks for your response.

I changed it but the velocity is still high.
In the results, the rest of the variables are correct except the velocity.
Where is the problem?

Thanks
Sina

Hello,

I was able to reduce the velocity with the friction changes.
The problem I have is that in my 2 boundaries, the velocity vectors are fixed after some time and do not change. I don't know what the problem is?

Thank you for guiding me.

Thanks
Sina

Hello Sina,

As previously suggested in another post of this topic, have you tried to run computations step by step with models more and more complex (see the 6 suggestions) and do you always have the same behavior?

In that case, please tell us which ones are OK and which are not. As you do not use TELEMAC-2D in standard ways, there may be many reasons why you get trouble.

Chi-Tuan

Hello,
I was able to control my velocity as well as velocity vectors by changing the OPTION FOR LIQUID BOUNDARIES =1;1
The only question I have is that because I have given the boundaries node by node to my file, I am afraid that my liquid boundary file has not been read.
(I may have encountered problems in Fortran changes).
I am sending the liquid boundary file again along with the subroutines if possible so you can see if I made the changes correctly.
thanks
sina