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Old   May 24, 2005, 07:05
Default Convergence problem
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Can anyone please tell me the techniques of getting a converged solution for unsteady, compressible turbulent flow with species transport.


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Old   May 24, 2005, 11:13
Default Re: Convergence problem
Mehdi Ghoddosy
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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.

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Old   May 27, 2005, 07:49
Default Re: Convergence problem
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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
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