Hyperbolic Models of Homogeneous Two-Fluid Mixtures

Details Hyperbolic Models of Homogeneous Two-Fluid Mixtures Hyperbolic Models of Homogeneous Two-Fluid Mixtures

2008-02-08

arxiv.org/abs/0802.1120v1

Meccanica 33, 2 (1998) 161-175

Physics

Fluid Dynamics

14 pages

Scientific paper

10.1023/A:1004354528016

One derives the governing equations and the Rankine - Hugoniot conditions for a mixture of two miscible fluids using an extended form of Hamilton's principle of least action. The Lagrangian is constructed as the difference between the kinetic energy and a potential depending on the relative velocity of components. To obtain the governing equations and the jump conditions one uses two reference frames related with the Lagrangian coordinates of each component. Under some hypotheses on flow properties one proves the hyperbolicity of the governing system for small relative velocity of phases.

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