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HOW to GET FLUCTUATING VELOCITY COMPONENT at FLUEN

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Old   November 26, 2005, 03:08
Default HOW to GET FLUCTUATING VELOCITY COMPONENT at FLUEN
  #1
Seyfettin
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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

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Old   November 29, 2005, 03:29
Default Re: HOW to GET FLUCTUATING VELOCITY COMPONENT at F
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D.pavitran
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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'

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Old   December 1, 2005, 04:51
Default Re: HOW to GET FLUCTUATING VELOCITY COMPONENT at F
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Seyfettin
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THANK YOU PAVITRAN,

SINCERELY..

SEYFETTIN

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