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Communication Dans Un Congrès Année : 2005

A new approach for three-phase flows

Jean-Marc Hérard
EDF

Résumé

We present here a new model to describe three-field patterns or three-phase flows. The basic ideas rely on the counterpart of the two-fluid two-pressure model which has been introduced in the DDT framework, and more recently extended to water-vapour simulations. We show the system is hyperbolic without any constraining condition on the flow patterns. A detailed investigation of the structure of the Riemann problem is achieved. Regular solutions of the whole are in agreement with physical requirements on void fractions, densities and internal energies for a rather wide class of equations of state. Even more, this approach enables to perform computations of standard single pressure three-phase flow models, using relaxation techniques and coarse meshes. A few computational results confirm the stability of the whole approach.
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Dates et versions

hal-01582727 , version 1 (04-12-2019)

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Jean-Marc Hérard. A new approach for three-phase flows. 4th AIAA Theoretical Fluid Mechanics Meeting, American Institute Aeronautics and Astronautics, Jun 2005, Toronto, Canada. ⟨10.2514/6.2005-4939⟩. ⟨hal-01582727⟩

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