Convergence problem
 

Can anyone please tell me the techniques of getting a converged solution for unsteady, compressible turbulent flow with species transport.

Sincerely,

Saad

Re: Convergence problem
 

You can use low under relaxation factors for the parameters that more divergence is observed. On option is to use low relaxation factor for first time steps/interations and then use high relaxation factor. Using low relaxation factor will slow your solution.

Regards

Re: Convergence problem
 

In the solution control panel , go to surface -- > residual . there u could find convergence resolution criteria of 0.001 will be ther u just change it to o.1 and run. Also u could reduce the moment value from default of 0.7 to o.2 as such in the solve,control options. thus u could bring the convergence