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Heat transfer coefficient calculation.

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Old   January 14, 2008, 12:58
Default Heat transfer coefficient calculation.
  #1
Jimmy
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Hi guys,

I am using Star-CD to simulate coolant flows. We need to input Tbulk when calculating the HCoefficient. From my understanding, Tbulk should be the bulk temperature relative to the reference temperature (not absolute temperature), but I didn't find anything from the Star-CD manuals to support this. Who can confirm this for me?

Thanks,

Jimmy
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Old   January 14, 2008, 13:10
Default Re: Heat transfer coefficient calculation.
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James
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You could confirm it by getting the boundary heat flux, temperature and hcoeff for the same boundary cell and doing the calculation by hand.

Alternatively work up a small OPERATE script to calculate Hcoeff for all boundaries then subtract Prostar's Hcoeff from it and confirm that all cells show essentially zero.

I believe that you are correct in your understanding of Hcoeff.
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Old   January 14, 2008, 13:17
Default Re: Heat transfer coefficient calculation.
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Jimmy
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Thank you very much for your help.

Now I use the relative bulk temperature (Tbulk-Tref) to calculate the Hcoefficient, the result looks reasonable.

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Old   February 19, 2008, 17:53
Default Re: Heat transfer coefficient calculation.
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alaa fra
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softwar
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