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I'm doing lake simulation for wind (time-varying). However, when I try to apply the wind component varying in the Y direction it does not compute any calculations. Only X component the model calculates. Kindly comment if you know why this is the issue. I have attached the files below

Fortron file attached

Hi
These fortran file are designed for the test case and are not usable for other case.
Don't try to use an example without understand what is done in it.
Try to run your case without fortran and if this is needed just add the fortran file you adapt.

Regards

Hi

I'm not good in fortran programming.
I wonder how can i add timevarying wind without fortan file. I only need to give wind speed varying with time in both direction. Can you please send me a similar fotran file with modification if you have.


How can i undestand the example cases. There are no discription found.

Thankyou

Hello,

In release v8p2r0 (and the introduction of the new METEO_TELEMAC module based on METEO_KHIONE in previous releases), there is a bug with the y component of wind if giving x and y coordinates of wind velocities in the atmospheric data file. It has been fixed on the trunk (r16549) since a few weeks.
Please find enclosed the fix.

Hope this helps,

Chi-Tuan

Hi Chi-Tuan

Thank you very much for the updated file. I replace the file in the Telemac directory.

However, I tried withY component wind direction alone in the model using the ASCII file. However, doesn't show any effects in the model. Basically no results. When I give X component of wind it's working as usual. Do you have any idea why it's not it's working properly?

Hello,

What do you mean by "no results"?

If you have 2 components of wind velocity, you have to give them both in the ASCII ATMOSPHERIC DATA FILE, otherwise the missing to the value of the keyword WIND VELOCITY ALONG X or WIND VELOCITY ALONG Y (without any in the steering file, it will be the default value of this keyword).

Maybe the problem is in the Fortran files you have added, but you have to understand what you do when you add some as Christophe has already told you at least twice. Only keep what is necessary (the meteo_telemac module I sent you e.g.).

Chi-Tuan

Hi Chi-Tuan

I think you have misunderstood my situation. The question I ask is without Fortran files When I run the simulation by giving the Wind 2 option and with the Ascii file separately. it works for the X component can see the UV varies with time in the lake. However when I run it with defining the Y component and X=0 as showing below no results are showing. Simply no effects on lake water from the wind. Maybe I am doing the same defining error.

#REFDATE 1900-01-01 00:00:00
#TIME FUAIR FVAIR
T WINDX WINDY
s m/s m/s
0 0 1
5 0 1
100 0 10
3000 0 20
3000000 0 20


Thanking you

Hi,

Since I'm also interested in this topic, I did some testing regarding the topic non-stationary wind in time and discovered a strange behaviour.

But first some basic information about my set-up. I'm running v8p2r0 revision 16583. However, `svn info` gives me the information that the last change was done at revision 16174. I used /tags/v8p2r0 for connecting to the repository.

Regarding the testing; I simply applied wind from the 4 main cardinal directions (steady regarding direction), which I ramped up from 0 to 10. When doing so I experienced that it was generally no problem to have either wind from west or from east, but wind from north or south was simply not possible. Also with some additional testing (wind from SW, SE, NE, NW) I generally experienced that the Y direction of wind simply had no influence on the simulations itself.

I defined the wind with a simple .txt as follows:
The wind file itself has the following structure:
Moreover, it was possible for me to have the keywordactivated andcommented out without getting any error.

I'm not sure if this is an error from my side and how I apply changing wind to the model or this might be related to the issues mentioned in #38245 of this thread.

I'm happy to provide more information if needed if this issues does not originate from the way I apply the wind.

Best regards

Hello Clemens,

As told in my previous post #38245 there is a bug with the y component of wind when providing atmospheric data with x and/or y components of wind. The fix was enclosed of this post.

Can you try it please? It should better work (I also tried with a simple test case of a basin at rest with wind blowing in x or y direction and I got the similar results if rotating the mesh).

Hope this helps,

Chi-Tuan