open TELEMAC-MASCARET The mathematically superior suite of solvers

Hi,

I want to put some submerged piles in my water, and simulate the scour around the piles. But I don't know how to model the piles, they are buried in the seabed and lower than the water surface. I think just set them to wall can't meet my requirements, because there's water above it. Anyone could tell me how to achieve it ?

Thanks