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Residual rise

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Old   July 21, 2010, 04:08
Default Residual rise
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Mohsin Mukhtar
Join Date: Mar 2010
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hello

I hope you people are doing well. During my fluent's simulation using k-Epsilon model the residual level reduces (trys to converge) but at some point in the calculation the residauls for k and epsilon starts to diverge but as I have set a lower level for the residuals of K and epsilon. I still get a converged solution.

1. My question is that if the residuals for K and epsilon or any parameter show a diverging trend and the solution gets converged. Is it acceptable?or the residuals are always supposed to show a converging trend? (If we only observe residuals for convergence criteria).

2. My second question is that As the residuals for K and epsilon showed a diverging trend, I kept their convergence criteria to 0.005 each. Is this an acceptable limit?

Thank you.

Mohsin
South Korea

Last edited by Mohsin; July 21, 2010 at 04:27.
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