turbulence decision???

May 21, 2006, 06:57

Hello everybody. I am simulating a hypersonic flow problem over a wedge shaped body and many other bodies. when i opted "laminar"case, it showed the error that "reynolds number is very high" and coverges suddenly to a wrong value. Then I switched on to Turbulence K-e model(medium 5%), then I got the correct results. But for K-e model with "1% or 10%above" I was unable to obtain the correct results. Can any one explain what acually happened ??? (I have standard results to compare) Thanks in advance. Regards VVJ

May 21, 2006, 14:37

Try the SST.

May 24, 2006, 09:30

Best go and read a book on turbulence modelling I'm afraid, as it would take too long to explain why on this site.

Cheers

Adam

May 21, 2006, 06:57	turbulence decision???	#1
vijesh joshi Guest Posts: n/a	Hello everybody. I am simulating a hypersonic flow problem over a wedge shaped body and many other bodies. when i opted "laminar"case, it showed the error that "reynolds number is very high" and coverges suddenly to a wrong value. Then I switched on to Turbulence K-e model(medium 5%), then I got the correct results. But for K-e model with "1% or 10%above" I was unable to obtain the correct results. Can any one explain what acually happened ??? (I have standard results to compare) Thanks in advance. Regards VVJ

May 21, 2006, 14:37	Re: turbulence decision???	#2
PetrK Guest Posts: n/a	Try the SST.

May 24, 2006, 09:30	Re: turbulence decision???	#3
Adam Guest Posts: n/a	Best go and read a book on turbulence modelling I'm afraid, as it would take too long to explain why on this site. Cheers Adam

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