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| CATEGORIES ABOUT VOLUMETRIC FLOW RATE | |
| fluid dynamics | |
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Given an Area ''A'', and a fluid flowing through it with uniform Velocity ''v'' with an angle θ away from the Perpendicular to ''A'', the flux is: : In the special case where the flow is perpendicular to the area A, that is, θ = 0, the flux is: : If the velocity of the fluid through the area is non-uniform (or if the area is non-planar) then the rate of fluid flow can be calculated by means of a Surface Integral : : where ''d''S is a differential surface described by: : with n the unit Surface Normal and ''dA'' the differential magnitude of the area. If a surface ''S'' encloses a volume ''V'', the Divergence Theorem states that the rate of fluid flow through the surface is the integral of the Divergence of the velocity Vector Field v on that volume: : SEE ALSO |
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