Hi again,
we are actually facing the same problem as last year. We are modelling reservoir flushing with multiple grain size from 1mm up to 80mm. The simulations with uniform grain size are working well, but if I switch to the multiple grain sizes, SISYPHE deposits the sediment at the outflow boundary. The boundary conditions are set to prescribed H and free tracer.
Why does that happen und has somebody a suggestion to solve this problem?
Many thanks,
Gabriele