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Old   October 15, 2008, 08:22
Default v2f model?
  #1
dh
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hi

i want to apply v2f model to channel flow(Ret=395, based on friction velocity and channel half width).

but i don't know what epsilon equation is adequate.

what low reynolds number epsilon equation is good for v2f? Launder-Sharma? Chien? Jones-Launnder?

does v2f model need low reynolds number epsilon equation for low re number channel flow?

i need your help.........

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Old   October 19, 2008, 20:01
Default Re: v2f model?
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Halim
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Read the Prof. Durbin's Papers, for example

Medic and Durbin, 2002, "Toward Improved Prediction of Heat Transfer on Turbine Blades" ASME Journal of Turbomachinery, Vol. 124, pp.187-192.

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Old   October 21, 2008, 22:46
Default Re: v2f model?
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dh
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Thank you Halim

I review the paper you recommanded.

Your message is that time boundary is needed.

Is that right?

Then, Is no damping function needed for Ce2(coefficient dissipation of epsilon) of epsilon eq.?

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Old   October 22, 2008, 04:55
Default Re: v2f model?
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Halim
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Yes, no damping function needed for Ce2(coefficient dissipation of epsilon) of epsilon eq. Time scale is imposed (instead of usual k/epsion) in the epsilon equation.

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