open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello,

I'm getting some oddly high velocities at one point in my channel. I'm wondering if my boundary conditions make sense:

On the wall the boundary is set as [222] which is essentially logarithmic (i.e. mesh discretisation at the boundary is too large to force no-slip condition).

At the bottom I've not specified anything in the *.cas file, and so assume it's the Neumann condition (i.e. normal derivatives).

Could these interact in such a way to cause this?

Kind regards,
Simon

I think it was due to how I specified roughness on the lateral boundaries.

Just to add: is there a way to specify the boundary condition on the walls in a similar fashion to it is on the bottom other than programmatically?