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arXiv · 1510.03900

Extra mass flux in fluid mechanics

Peter Ván·Michal Pavelka·Miroslav Grmela
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Abstract

The conditions of existence of extra mass flux in single component dissipative non-relativistic fluids are clarified. By considering Galilean invariance we show that if total mass flux is equal to total momentum density, then mass, momentum, angular momentum and booster (center-of-mass) are conserved. However, these conservation laws may be fulfilled also by other means. We show an example of weakly non-local hydrodynamics where the conservation laws are satisfied as well although the total mass flux is different from momentum density.

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Peter Ván, Michal Pavelka, Miroslav Grmela. 2016-07-08. Extra mass flux in fluid mechanics. https://doi.org/10.1515/jnet-2016-0058

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