DPM and convergence
 

Hi
I am simulating gas-particle flow in conical nozzle.
i performed 2 steps
1. converge solution for gas phase.
2. defined injection for particles (99) paticles

Fluent says 78 escape.................22 incomplete...

solution remains same even after a few thousabd iterations.

Now when i check for DPM interaction , solution dont converge instead says reverse flow in inlet after a few iteration...

i m using 300 iterations per DPM iteration
0.1 under relaxtion
number of iteration 5000
step length 1

anybody help wats the problem
Regards
Ali