Why it is not converge in DPM calculation?
I calculate DPM with 1000 particles from a nozzle, The continuity vibtrates betwen 102 and 103. Why it is not converge/ Thanks for any suggestions.
Josh 
Re: Why it is not converge in DPM calculation?
you can try it with lower underrelaxation factors of Discrete Phase Sources

Re: Why it is not converge in DPM calculation?
I've had some difficulty getting DPM models to converge with some recent simulations. Here are a few tips to improve stability:
 solve for strictly turbulent flow first (disable Energy, PDF and radiation model [if applicable]). Once turbulent solution is converged, enable these equations.  solve for uncoupled DPM first  once uncoupled flow reaches convergence (or close to), enable interaction with continuous phase. Use an URF of about 0.1.  increase # of continuous phase iterations per DPM iterations (try 100)  increase # of tries, if DRW model is enabled 
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