open TELEMAC-MASCARET The mathematically superior suite of solvers

Hi,

We are dealing with a reservoir flushing case with grain feeding. We set LIEBOR = KSORT and LIQBOR = KENT in the conlit.f but the evolution in the first nodes at the inflow boundary is , while the evolution in the second nodes increases up to +60cm. Why is the evolution in the first nodes 0? Do we have to set an additional boundary condition?
We have also the problem that the feeded sediments cumulate shortly after the inflow boundary, while the sediment defined by the initial conditions in the init_compo subroutine is transported.
Does anybody has some hints?
Many thanks
Gabi

Dear Gabi,
could you please send me the files of your problem? I'd like to take a closer look to see where could be the problem.

Many thanks,

Pablo

Dear Pablo,

I attached the files.

Many thanks,
Gabi

Dear Pablo,

second try, the first file was to big, because I usually start with a previous computation file. So I had to change the files a little bit.

Many thanks again,
Gabi

Dear Pablo,

Clemens toldme, that there are some problems with the coupling period in V6.1. I tried the simulation with a coupling period of 1 again and the evolution in the second node is much smaller (now about 10cm and not 60cm). But why is there no evolution in the first node? Do I have to set an additional boundary condition or did I something to fix the evolution in the first nodes at the inflow boundary?

Many thanks,
Gabriele

Gabriele,

By putting the liquid boundary at KENT (5 in conlim file) you prescribe the bed evolution at that boundary with the next integer in the row of the conlim file. In your case these are set to 0, represssing all evolution at the boundary. So you are correct in thinking you have fixed the evolution to zero.

Michiel

Hi Gabriele,
following Michiel's suggestions, you can take a look to the conlim's example file in Sisyphe Manual (page 62). Flag "4" enables free evolution.

All the best,

Pablo