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HELP!!! Natural convection with turbulence

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Old   October 29, 2010, 03:23
Default HELP!!! Natural convection with turbulence
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Libo Qian
Join Date: Sep 2009
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Now I am simulating natural convection in a square cavity using my own SIMPLER code.
I am using two models :
1. low Reynolds number k-e model; 2. k-e model with wall function and the Ra number is larger than 10^10, but i could not get convergent results, and during iteration, the result will become divergent suddenly.
I made a limitation for k and epsilon. k=max(0,k), epsilon=max(0,epsilon)
Should i make more limitation for other parameters or production term?
I will give my grateful thanks to the people who help me!!
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Last edited by leotsien; October 29, 2010 at 03:25. Reason: Spelling error
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