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Continuity equation

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Revision as of 22:19, 19 August 2006

In fluid dynamics, a continuity equation is an equation of conservation of matter. Its differential form is

 {\partial \rho \over \partial t} + \nabla \cdot (\rho \mathbf{u}) = 0

where  \rho is density, t is time, and u is fluid velocity.


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