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Old   May 17, 2007, 02:38
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Hi all

Please who tell me how to calculate the local Nu and avargerd Nu along the certain wall and avarged Nu for all the channel

Thank you
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Old   May 19, 2007, 16:58
Default Re: Nu Number
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Nu number = hD/k

where k is the termal conductivity of the fluid. h= heat transfer coefficient

fluent cannot calclulte heat transfer coefficient on its own until and unless you provide the bulk temperature as a reference temperature to it. draw an rake, find the local bulk temperature and then put in reference value of temperature. now the calculated value of h or Nu is the correct local value where u have made the rake. In this manner you can find the value of Nu and any location by putting the local bulk temperautre.

baa bye
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