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 rosol May 17, 2007 02:38

Nu Number

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

 zenith May 19, 2007 16:58

Re: Nu Number

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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