Nusselt Number on surface

Marcin123 · March 30, 2019, 20:48

Hi everyone
I exported necessary data from CFX to calculate local values of Nusselt number in excell. Now i got coordinates (x,y,z) and Nusselt number associated with it, is it possible to display it somehow in result. In attachment you can see coordinates and local Nusselt number. Thanks for any suggestions.

ghorrocks · March 31, 2019, 00:22

It would be better if you put the Nusselt Number equation into CFD-Post so it becomes a CFD-Post variable. Then it can be plotted like any other CFD-Post variable.

Marcin123 · March 31, 2019, 05:32

Yes, that’s right but using cfx function i can’t calculate nusselt number locally, because i need to use area average od area integrated heat flux , that result in average Nusselt number calculation, is it possible to calculate it for example in every mesh element?

ghorrocks · March 31, 2019, 06:01

CFX has area average and area integral functions in CEL.

March 31, 2019, 00:22		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	It would be better if you put the Nusselt Number equation into CFD-Post so it becomes a CFD-Post variable. Then it can be plotted like any other CFD-Post variable. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

March 31, 2019, 06:01		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	CFX has area average and area integral functions in CEL. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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March 31, 2019, 05:32		#3
Marcin123 New Member Marcin Join Date: Jul 2017 Posts: 4 Rep Power: 9	Yes, that’s right but using cfx function i can’t calculate nusselt number locally, because i need to use area average od area integrated heat flux , that result in average Nusselt number calculation, is it possible to calculate it for example in every mesh element?