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velocity calculations in mass flow inlet boundary condition

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Old   October 16, 2010, 07:20
Default velocity calculations in mass flow inlet boundary condition
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montazer
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hi
I have a problem with fluent.when I specified a mass flow inlet condition for nozzle inlet of a shell and tube heat excganger, fluent calculate another velocity value for this inlet than I evaluated with continuty eq.
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Old   October 18, 2010, 03:11
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Svetlin Philipov
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Give more information... 2D or 3D is the problem and how you calculate velocity? if the problem is 3D make sure your density is correct and just apply
v=G/S, where
v-velocity [m/s]
G-mass flowrate [m3/s]
S-cross section area [m2]
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