open TELEMAC-MASCARET The mathematically superior suite of solvers

Dear forum,

Recently in our company I've been asked alot about openTelemac capabilities and it's "state of the art" regarding coupled models with Underground flow and Water quality for mainly because there is an interest to perform some enviromental flow simulations, and this is what I know so far:

Underground flow.

-openTelemac has ESTEL-2D/3D but not available for download. In some 5-3years old post references the tool as a future module to be reworked and added. Is that project still alive?

-Some studies report success with Telemac x Modflow (and even with RT3D) simulations. is there guide/reference that states how exactly is that performed?

Water Quality.

-openTelemac has for it v7p+ versions a Waqtel module.
-Some users report sucess with telemac2d/3d and DelWaq (also in delft3d forum) and there is a case under examples called delwaq.


I'm almost sure I missed a lot here, So...if someone takes a leap of faith and tries to model a Freesurface x underground_flow x Water_quality coupled model 2D/3D where is good place to start from?



Regards,

José Díaz.

Hello José

Actually, we have stopped developments in ESTEL since couple of years for several raisons. We have a coupled version between Telemac-2D and Estel that goes back to v6p3 (I think). The coupling algorithm is still working but it needs to be refreshed and updated to the new release of Telemac.

For water quality, we have developped a new module called WAQTEL which is coupled with both Telemac-2D and Telemac-3D. I consider that it is a first step to consider WAQ processes and it needs again some efforts to be extended and validated.
For the use of DELWAQ, this is the most recommanded option for very sophisticated WAQ studies, however, the main disadvantage is that there are no real coupling between telemac and Delwaq. The other problem is that Delwaq can't be used with mpi based parallelism which is a major handicap for big applications.
I will be really happy to assist you for any advanced applications using WAQTEL.

With my best regards
Riadh

Dear Riadh,


I've been googling around and apparently DELWAQ can be used in parallel but rather using OpenMP protocol (instead of telemac's MPI) which can be "ok" to configure and test because I run the cases in a rather simple beowulf cluster with 3 Xeon nodes.

When you say "there is no real coupling..." you mean both codes run in a serial manner? e.g. Hydraulics (telemac 2d/3d) --then--> Water Quality (Delwaq) right?

Water quality isn't exactly my field of expertise (I was asked to research the options because Im the "telemac evangelist" here), but isn't that "ok" for tasks as tracing Pollutant concentration, mean life ( or even T95 life), analyzing spatial behaviours of pollutants in a river-floodplain or similar cases? I mean, it shouldn't be necessary to if the pollutant/element analyzed doesn't change significally water properties right?

...In which cases is a "complete-couple" strongly suggested?

I would be interested (if this project is approved) to compare whatever WAQ model chosen to WAQTEL and provide some feedback!

On the other hand ,is truly a shame that ESTEL is no longer being developed, that is definitly a drawback for oTelemac in this kind of hydro-enviromental simulations...Anyone has a suggestion on that matter (a groundwater model that can be coupled to Telemac2D/3D)?

Regards,

José Díaz