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@wikipedia


A vector pointing along the fluid velocity 

LaTeX Math Inline
body--uriencoded--%7B\bf u%7D
and absolute value of the mass flux:

LaTeX Math Block
alignmentleft
{ \bf j_m} = j_m \ {\bf n} 

where

LaTeX Math Inline
body--uriencoded--%7B\bf n%7D = %7B\bf u%7D/ %7B%7C %7B\bf u%7D %7C%7D

unit vector of the fluid velocity 

LaTeX Math Inline
body--uriencoded--%7B\bf u%7D


It can be also expressed as:

LaTeX Math Block
alignmentleft
{\bf j_m} = \rho \ {\bf u} 

where

LaTeX Math Inline
body\rho


See also


Natural Science / Physics / Mechanics / Continuum mechanics / Fluid Mechanics

Mass Flowrate ] Volumetric Flowrate ] [ Mass Flux ]