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Old   January 8, 2007, 08:07
Default Turbulent heat transfer
  #1
Hugo
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Hi.

I'm stuggling to get correct heat transfer using the k-e model.

I'm trying to model heat transfer from fluid to a wall, using the k-e model, for a cylinder in a cross-flow. I've got y+ values in the range 30-300 as the good book suggests, but still the Nussult numbers are ten times higher than those suggested by an experimental correlation (Churchill & Bernstein, J Heat Trans. 99:300). Is there another criterion that I have to meet to make sure heat transfer is coorect? Anyone had similar experience? HELP!!!

Thanks, Hugo.
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Old   January 8, 2007, 11:57
Default Re: Turbulent heat transfer
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Ralf Schmidt
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Hi!

Are your reference values set correctly???

Ralf
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Old   January 11, 2007, 10:34
Default Re: Turbulent heat transfer
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Hugo
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Yes, got it wrapped up - should have been calculating my own Nusselt numbers, not relying on the values that Fluent was putting out. Thanks, Hugh.
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