Transport Equation

Available identifiers

WikidataQ105560509 ScholiaQ105560509MaRDI QIDQ6674354

equation that describes the transport of some (extensive) quantity such as mass, energy|heat, momentum, electric charge

Description

There are several (constitutive) equations which describe the transport of matter, or properties of it, in an almost identical way. In every case, in words they read: Flux (density) is proportional to a gradient, where the constant of proportionality is a characteristic of the material. In general, the constant must be replaced by a 2nd rank tensor, to account for directional dependencies of the material.

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Defining Formula: $F\propto \mathrm{\nabla }\rho$

$F$ symbol represents Flux

$\rho$ symbol represents Density

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Related URL

https://en.wikipedia.org/wiki/Continuity_equation

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