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jlx January 11, 2011 22:13

Nusselt Number
 
I use Fluent to analyze flow in a flat duct. After calculation, I wanna get Nusselt Number.I have try to get the surface Nusselt number from the plot>xyplot,choose y axis function with wall fluxes, and get the surface Nusselt Number under wall fluxes, but is seems weird. The surface Nusselt Number always appears zero.
After I get the Nusselt Number, I wanna plot the Nusselt Number with X*(dimensionless axial coordinate for the thermal entrance region)

How can I get this plot.Please tell me.

Thx all.

jlx January 13, 2011 00:19

Can anyone give me some information?
Thanks

mettler January 14, 2011 14:30

I think you might be getting zero because your two temperatures are equal, thus giving a zero 'h'. I would think that you can find the local convective coefficient and then calculate Nu...maybe


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