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UDF for time-mean temperature gradient

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Old   October 27, 2012, 17:52
Default UDF for time-mean temperature gradient
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Negin Nazarian
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Dear All,

Im looking for a suggestion on how to do this in the best way:

I would like to calculate time-mean Nusselt number but I do not trust pre-defined Nu# in fluent. ( I am solving radiation as well as convection and the value for total heat transfer coefficient accounts for both)

I would like to calculate Nusselt number from temperature gradient and I know there is a UDF for that purpose.
However, how would it be possible to calculate the time-mean temperature gradient?

I also dont think I can use custom field function for this purpose since it wont be possible to get the time-mean value.

Any suggestion would be great.

Cheers
Negin
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Old   November 12, 2012, 04:30
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It is better to calculate Nusselt number by yourself in Excell.
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