Convergence problem

February 7, 2003, 16:50

I am having a tube which has one hole(inlet) at the top and 45 holes(pressure outelt) in the bottom. The model doesnt seem to converge. The flow is laminar when it enters the inlet. I am using segregated-laminar model. Please tell me what kind of discretization schemes and underrelaxation factors shud I use??

Thanks

February 8, 2003, 12:34

If at first, it doesn't converge, use very low under-relaxation factors, say 0.2~0.3, for example. Then gradually up the values as your results begin to converge.

February 7, 2003, 16:50	Convergence problem	#1
Pravir Guest Posts: n/a	I am having a tube which has one hole(inlet) at the top and 45 holes(pressure outelt) in the bottom. The model doesnt seem to converge. The flow is laminar when it enters the inlet. I am using segregated-laminar model. Please tell me what kind of discretization schemes and underrelaxation factors shud I use?? Thanks

February 8, 2003, 12:34	Re: Convergence problem	#2
Chris Guest Posts: n/a	If at first, it doesn't converge, use very low under-relaxation factors, say 0.2~0.3, for example. Then gradually up the values as your results begin to converge.

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