convergence problem of a simple DPM simulation
 

Hi everybody,

I'm trying to simulate a 2-phase flow passing some bends using Discrete Phase Method. air is the career phase and the discrete phase is coal powder.
I have convergence problem and tried several trick to control the solution, but I'm afraid I wasn't able to make it converge adequately.
I will be appreciate if everybody share with me his suggestion for my trouble.

Here there are some specification:
Grid: Quad, 3D
iso-thermal condition, incompressible gas
sst k-omega turbulent model,
injection from surface,
steady state solver
two-way turbulent coupling: active

Thanks in advance

hi amin,
did you solved your problem?
i have a similar problem. steady continuous phase converged without DPM. but when i interact them (two way coupling) it became impossible.

in some tutorials that i found in the web there are some advises for this problem:
-increase "number of continuos phase iterations per DPM iteration"
-in "Numerics" tab "Enable Node based averaging" (this can increase solution time)
etc.

but i tried all of them and nothing changed!!

valuable comments appreciated!