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-   -   HOW to GET FLUCTUATING VELOCITY COMPONENT at FLUEN (http://www.cfd-online.com/Forums/fluent/38737-how-get-fluctuating-velocity-component-fluen.html)

Seyfettin November 26, 2005 03:08

HOW to GET FLUCTUATING VELOCITY COMPONENT at FLUEN
 
Hi everybody;

I am currently using FLUENT and I am waiting an explanation on fluctuating velocity. I have been studying on a jet flow in crossflow. My turbulence model is Realizable k-epsilon. After the unsteady solution I want to get the fluctuating velocity components for having turbulence quantity. If anybody could gave me any info on the subject I would be very happy.

Any answer will be appreciated. Thanks


D.pavitran November 29, 2005 03:29

Re: HOW to GET FLUCTUATING VELOCITY COMPONENT at F
 
Hi,

tke: turbulent kinetic energy

since tke = 0.5 * ( (u')^2 + (v')^2 + (w')^2 )

eddy viscosity models assume isotropy of stresses, so u=v=w ;

then sqrt( 2/3 tke ) is ~ u'


Seyfettin December 1, 2005 04:51

Re: HOW to GET FLUCTUATING VELOCITY COMPONENT at F
 
THANK YOU PAVITRAN,

SINCERELY..

SEYFETTIN



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