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-   -   CFX Convergence enquiry (http://www.cfd-online.com/Forums/cfx/70132-cfx-convergence-enquiry.html)

mactech001 November 15, 2009 20:55

CFX Convergence enquiry
 
1 Attachment(s)
Hi everyone,

I obtained a unstable RMX residual graph after 1000 iterations at levels 1e-5 residual. i've attached an image of residual graph.

By unstable i mean, towards the end of the calculation, the residual graph for all residual variables are almost sinusoidal, not a clean stable line.

I think this unstable line in residual graph is of some concern, but how concern should i be please? What can i do to eliminate this unstability please?

Look forward to hear of any comments/suggestions.

ghorrocks November 15, 2009 21:26

http://www.cfd-online.com/Wiki/Ansys...gence_criteria


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