open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello everybody,

I study currents in a 3D tank and I represent 3 entries of current. Before I considered a flat bottom and a constant vertical wall with a constant water depth equal to 1m. But now I have to added a sloping beach with the same open boundary. So now the wall is not vertical but it is a slope beach.

I join here the initial configuration because it's difficult to explain easily the configuration.

In the new configuration, I wish to configure the lateral boundary with the open boundaries like a slope. So I think that I have to add open boundaries on the bottom and not on the vertical wall like previously configuration. For that I think I have to modify the programm limi3d.f but I don't kow how (what formulation for my boundaries). Maybe someone can explain to me how I can do this

I'm sorry if i'm not clear on my explaination

Thank you for your help in advance

Hello,

There is an option for this in TELEMAC-3D, that was introduced in the version V7P1 if I remember well, but I don't think it has ever been tested on a sloped bottom, only a horizontal bottom. It's worth for you to try it I think, you can look at the example bottom_bc (the keyword you need to use is OPEN BOUNDARY CONDITIONS ON THE BED).

Cheers,
Agnès