Under Relaxation Factor Range
Hi everyone
I'm simulating mass flow distribution in micro-channel manifolds. The solution does not converge unless I change the Momentum Under Relaxation Factor. I read somewhere in this forum that we are not allowed to decrease the Momentum URF less than 0.5 But as I decrease it less than 0.5 the solution converges faster. Is it OK to reduce URF this way? I encountered an other problem too. Although the residuals are less than 1e-04, there is obvious different in mass flow rate in different number of iterations. could you please help me?:( Regards, Amin |
For Microchannel, first use double precision, second decrease URF of the UDF for wall slip profile. It's easy to converge it. Try more :)
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I want to simulate turbulent channel flow with slip B.C (by LES), But the problem doesn't converge, so can you guide me for URF for momentum & pressure? if you have any other comment, please write it. Thanks |
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