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-   -   Inflation Layers/thickness causing solution convergence problems (http://www.cfd-online.com/Forums/cfx/109239-inflation-layers-thickness-causing-solution-convergence-problems.html)

kd55 November 13, 2012 07:45

Inflation Layers/thickness causing solution convergence problems
 
Hi There,

As the title suggests, I'm having problems with solver convergence in cfx. I have narrowed the problem down to:

- if i increase the no. of inflation layers beyond 7, the solution doesn't converge
- if i set the no. of layers to five, but decrease the total thickness below 1.4mm, the solution doesn't converge.

I am modeling a toy car within a wind tunnel using the sst turb. model.

Kind Regards,

Kit

ghorrocks November 13, 2012 21:26

This faq is relevant: http://www.cfd-online.com/Wiki/Ansys...gence_criteria

But in your case it seems like you have a mesh quality issue.


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