Laminar Turbulence convergence

October 28, 2008, 18:58

Hello. I'm runnig a file with laminar and turbulent (K-w,SST). The turbulent model converge quite fast, but the laminar model (same mesh, same conditions...) is stabilize to around 5.10^3 to continuity and don't decrease more. How can be possible that the turbulent model converge to 10^5 adn the laminar don't?? Thanks

October 29, 2008, 01:39

either your model is turbulent, or it is laminar. But not both at the same time (except special laminar zone you enforced).

October 29, 2008, 09:29

I Know, but It just in the transitional Re. So I tried to simulate both of them to check them. Is that a problem to converge??

October 29, 2008, 10:19

I would say that if the laminar model doesn't converge, it seems that your model is full turbulent, and you are not in laminar-turbulent transition (I suppose). What is your Re? and what kind of calculation are you trying to simulate?

October 28, 2008, 18:58	Laminar Turbulence convergence	#1
Paul S. Guest Posts: n/a	Hello. I'm runnig a file with laminar and turbulent (K-w,SST). The turbulent model converge quite fast, but the laminar model (same mesh, same conditions...) is stabilize to around 5.10^3 to continuity and don't decrease more. How can be possible that the turbulent model converge to 10^5 adn the laminar don't?? Thanks

October 29, 2008, 01:39	Re: Laminar Turbulence convergence	#2
mAx Guest Posts: n/a	either your model is turbulent, or it is laminar. But not both at the same time (except special laminar zone you enforced).

October 29, 2008, 09:29	Re: Laminar Turbulence convergence	#3
Paul S. Guest Posts: n/a	I Know, but It just in the transitional Re. So I tried to simulate both of them to check them. Is that a problem to converge??

October 29, 2008, 10:19	Re: Laminar Turbulence convergence	#4
mAx Guest Posts: n/a	I would say that if the laminar model doesn't converge, it seems that your model is full turbulent, and you are not in laminar-turbulent transition (I suppose). What is your Re? and what kind of calculation are you trying to simulate?

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