open TELEMAC-MASCARET The mathematically superior suite of solvers

Hi everybody et Jean Michael:

anybody can help to informe me it is possible to determine sediments deposition volumnes into a reservoir with telemec 2D?
can you show images of results
regards

il est possible de modéler un problème de transport de sediments dans un reservoir (localisation de depositaion, volumes et hauterurs, etc...derrière un barrage avec déversoir) c'est le cas que m'interèsse étudier
est-ce que vous avez des images ou des photos de types de cases?

cordialment

José

Hello José,

Sediments in reservoirs are generally fine cohesive sediments, with settling phenomena, and there are very low velocities of flows which are highly 3-dimensional. This would be something for Telemac-3D, with suspended sediment represented in 3D, and bedload transport, if any, done by coupling with Sisyphe. This is what we are currently working on for EDF applications. The general problem is that you need to refine a lot the mesh near the bottom. So far our applications are done with simpler 1D models supplemented with a lot of expertise.

We also work on settling basins and compared measurements to Telemac-2D and 3D. It also seems that 3 dimensions are necessary. Depending on your geometry you can try as a guess work Telemac-2D coupled with Sisyphe, including suspended sediment in Sisyphe. This would require that you play with a few Sisyphe test cases before, to understand what are the main options and sensitive choices (bedload transport laws, boundary conditions, rigid beds, etc.).

Que te vaya bien !

Jean-Michel