turbulence length scale

mohammad · May 16, 2011, 04:29

Hey guys,
I'm modeling NREL wind turbine with SST model.
I have already finished my results and i want to know about the value of turbulence length scale using CFX-post.

Is it possible to know the value of it? how?

I need this value( values) ,because later I will use DES and I want to compare the results of these two models.

Any help and suggestion is welcomed in advance.

pavitran · May 16, 2011, 05:47

Yes, you can get the length scale by using K & epsilon or omega.

Length scale(k-epsilon) = k^(3/2)/epsilon
Length scale(k-omega) = k^(1/2)/omega

May 16, 2011, 04:29	turbulence length scale	#1
mohammad Senior Member mohammad Join Date: Dec 2010 Location: UK Posts: 245 Rep Power: 16	Hey guys, I'm modeling NREL wind turbine with SST model. I have already finished my results and i want to know about the value of turbulence length scale using CFX-post. Is it possible to know the value of it? how? I need this value( values) ,because later I will use DES and I want to compare the results of these two models. Any help and suggestion is welcomed in advance.

May 16, 2011, 05:47	Hi	#2
pavitran Member Dynampally Pavitran Join Date: Mar 2010 Location: India Posts: 74 Rep Power: 16	Yes, you can get the length scale by using K & epsilon or omega. Length scale(k-epsilon) = k^(3/2)/epsilon Length scale(k-omega) = k^(1/2)/omega

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