open TELEMAC-MASCARET The mathematically superior suite of solvers

Dear All,

I am currently trying to implement a particle tracking for fish habitat modelling in Telemac2D. I have successfully performed a 2D simulation however I do not how to implement/uinclude lagrangian particle algorithms in the same model. Is there any example in the v8p2r1 folder I can use as a reference?.

I checked the User Manual but found some abiguities. I prepared already my steering fil *.cas according to it. However, I really do not understand how to code my fortran file for particle tracking. Where is the source code of this uility?

Is there any example, tutorial or training available in this matter, please let me know.

I appreciate your help,

Marcelo Ruiz

Hello Marcelo,

If you want to use drogues feature, the TELEMAC-2D example to look at is called flotteurs.
You should read TELEMAC-2D validation manual for release v8p3, it is described only from this release. I would strongly recommend to read validation manuals of TELEMAC-2D or TELEMAC-3D in release v8p3 as there were improved (in particular every example should have been documented):
wiki.opentelemac.org/doku.php?id=documentation_latest

You can find an example of user_flot subroutine in the Fortran file of flotteurs example or in $HOMETEL/sources/telemac2d/user_flot.f

Hope this helps,

Chi-Tuan

Dear Chi - tuan

Thank you for the help. I succesfully simulated a passive particle in my test case. However, I was wondering how the actual lagrangian particle traking is computed. Do you know where is the script that computes the lagrangian framework, i.e., the motion. From Eulerian to Lagrangian.

I would appreciate the guidance through this,

Kind regards,

Marcelo

Hello Marcelo,

The Lagrangian part is not done in a script, but in a subroutine of TELEMAC called DERIVE (see $HOMETEL/sources/utils/bief/derive.f). You can read that it is called in the TELEMAC2D subroutine and it uses SCARACT subroutine from STREAMLINE module (also in utils/bief).

Hope this helps,

Chi-Tuan