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