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Old   March 23, 2012, 06:31
Default Nusselt number
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can anyone suggest me how to calculate the nusselt number from results?

I have a duct with L/D = 62 , ReD = 8100, all walls at constant heat flux. I want to cross check my results with Dittus- Boelter equation.

pl. do reply
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Old   March 25, 2012, 06:28
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Glenn Horrocks
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Define a variable in CFD-Post with the equation for Nussult number. Then you can use this variable as a normal results file variable -you can plot it, get min/max, integrate it, graph it against something etc etc
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Old   March 27, 2012, 09:45
Default how to create variable Nussult no in cfd post
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pritam gole
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i tried but not succeded in creating this varible with formula.......
please help
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Old   March 27, 2012, 10:55
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how did u try pritam?

what is your formula?
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Old   March 27, 2012, 15:06
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On CFD-POST first create an expression

Example: sqrt(Velocity w^2)

and name it ("nusselt", "my expression", or whatever)

Then on variables, create a new variable (also name it as you wish) and point the "expression" field to the expression you just created.
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