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mass flow rate in cd nozzle

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Old   January 7, 2016, 02:44
Default mass flow rate in cd nozzle
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GeonwooKim
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Hi there,

This more of a general fluid mechanics question, which I've had no luck in finding the answer, but here goes anyway:

For cd nozzle with constant pressure condition(inlet, outlet), are there equations to calulate the velocity decrease due to friction in nozzle?
I mean that the roughness constant and roughness height causes a frictional pressure drop, but how does this effect the velocity as function of length?

Any response will be appreciated.
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Old   January 7, 2016, 04:44
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Filippo Maria Denaro
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For compressible flow in quasi one-dimensional assumption, you can use the Fanno theory with superimposed area variation to set the governing equations
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Old   January 7, 2016, 06:13
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GeonwooKim
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Thank you for your kindness.

Do you have a tutorial about Fluent calculation with fanno theory?

If you have that tutorial, Please contact to me.
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