open TELEMAC-MASCARET The mathematically superior suite of solvers

Hi

I am applying a time varying wind uniformly across my domain. The manual says the value of COEFFICIENT OF WIND INFLUENCE (FAIR) depends on the magnitude of the wind. Therefore I plan to change the call to meteo.f in telemac2d.f to include the variable FAIR and update it every time step to reflect the new wind magnitude. Can anyone who has already applied a time varying wind advise me please; is this the best way to proceed?

Thanks

Fay

Hello Fay,

Yes you can do this. There is a formula giving FAIR in bord3d.f, it was never done in Telemac-2D, probably because nobody asked. In 2D with wind you get the correct free surface slopes but you do not see the upwelling effect.

Regards,

Jean-Michel

Hi

As we do this modification regularly, I would say it's easier to adapt FAIR in prosou.f
There is no need to change the call, just add the computation of Fair according to the wind speed before using it.

Regards

Hi Fay,

Please check the post,
www.opentelemac.org/index.php/kunena/16-...sh-in-a-parallel-run
where I have given the change meteo program along with the sample data file, to impose time and space varying wind.

You may download the file from the link
www.opentelemac.org/media/kunena/attachm...2535/windforcing.zip

The format of data file is as follows.
#header 1
#header 2
Number of node in the mesh (NB)
Time #1 in seconds
node no 1, Uvel comp, Vvel comp., pressure
.
.
node no NB
Time #2 in seconds
node no 1, Uvel comp, Vvel comp., pressure
.
.
node no NB
..
..

In the post Sebastien has suggested a better method also, unfortunately I have not be able to implement it till now (I need to work on its implementation).

With best Regards,
Gourish