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-   -   convergence problem (http://www.cfd-online.com/Forums/fluent/45025-convergence-problem.html)

alexandre June 13, 2007 18:07

convergence problem
 
Hi everyone, I'm trying to solve 3D turbulent flow around building model. But I have a problem with the convergence of continuity, k and epsilon equations. I need some help. Can someone point me in the right direction to resolve this problem? Thanks for your help


Tomasz Bednarz June 13, 2007 21:34

Re: convergence problem
 
please check whether your Courant number is correct for the grid and timestep you are using, this should help to stabilize the convergency


alexandre June 14, 2007 14:31

Re: convergence problem
 
Hi Tomasz, thanks for ur help. The problem is that I'm using segregate solver and I can't control the courant number to stabilize my flow. I'm wondering if the use of time steady to solve the problem is the cause of the instability. Because my flow is very turbulent (Re= 22000) and may be the solver can't stabilize the flow.



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