CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   Fluent UDF and Scheme Programming (http://www.cfd-online.com/Forums/fluent-udf/)
-   -   UDF for time-mean temperature gradient (http://www.cfd-online.com/Forums/fluent-udf/108599-udf-time-mean-temperature-gradient.html)

nenazarian October 27, 2012 17:52

UDF for time-mean temperature gradient
 
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

msaeedsadeghi November 12, 2012 04:30

It is better to calculate Nusselt number by yourself in Excell.


All times are GMT -4. The time now is 21:50.