LuckyTran |
May 11, 2017 23:04 |
Quote:
Originally Posted by RueyTeh
(Post 648498)
My target of data is outlet volume flow rate must multiply the intake air by 15 times. What is mean by the negative outlet flow rate?
The integral velocity magnitude in fluent also have unit m3/s , is it represent volume flow rate too?
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Negative volume flow means the flow is going outward. Positive would be inward.
Integral of velocity over a surface should have units of m^3/s because it has units of velocity times units of area.
The integral of velocity magnitude over a surface is not the volume flow rate. A quick counter-example is I have infinite velocity parallel to a surface, the integrated volume magnitude would be infinite but there would be no flow across the surface.
The integral of the normal component of velocity with respect to the surface over the area is the volumetric flowrate, by definition.
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