User Forum of Software BASEMENT

Matteo Facchini

Developer

From: Trento

Registered: 2014-09-05

Posts: 278

boundary condition problem with sediment

Dear BASEcommunity,

If I do not set the gravitational transport block my simulations will crash because all the incoming sediment is piling up at the inlet. Usually I use the sediment discharge boundary condition, but I have the same problem if I use the transport capacity.

So far, the best solution I found is to add a region upstream of my domain where I use the gravitational transport (with an index) and do not use it downstream of this region.

Do you have other suggestions?

Thanks

Lukas Vonwiller

Developer

Registered: 2014-09-04

Posts: 127

Re: boundary condition problem with sediment

Ciao Matteo,

Gravitational transport might slow down your simulation significantly. Did you try the IOup sediment boundary?

Other than that you could add your sediment over some element-, node- or mat-IDs further downstream.

cheers, Lukas

Matteo Facchini

Developer

From: Trento

Registered: 2014-09-05

Posts: 278

Re: boundary condition problem with sediment

Thanks!
Actually I have to say that my experiments work perfectly with a short inlet region (length=width of the channel) where the gravitational transport is active and defined via matIDs.
I could try the solutions you propose and post about the results!
Best
Matteo