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-   -   second order upwind cause divege !! (http://www.cfd-online.com/Forums/main/67119-second-order-upwind-cause-divege.html)

khsiavash August 4, 2009 15:00

second order upwind cause divege !!
 
Dear friends
I`ve developed a non linear eddy viscosity model with UDF.when I use the first order upwind for all transport equations it is OK! solution converged.
But when I switch on second order upwind solution is going to diverging.up to an error "turbulent viscosity limited to....." and finally floating point.

how can I solve this diverging ?


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