Volume 72, 2023Fourth Workshop on Compressible Multiphase Flows: Derivation, closure laws, thermodynamics
|Page(s)||2 - 18|
|Published online||09 August 2023|
Study of relaxation processes in a two-phase flow model
Université de Nantes, Laboratoire de Mathématiques Jean Leray (LMJL - UMR 6629), F-44000 Nantes, France
This work concerns the analysis of the relaxation processes toward thermodynamical equilibrium arising in a compressible immiscible two-phase flow. Classically the relaxation processes are taken into account through dynamical systems which are coupled to the dynamics of the flow. The present paper compares two types of source terms which are commonly used: a BGK-like system and a mixture entropy gradient type. For both systems, main properties are investigated (agreement with second principle of thermodynamics, existence of solutions, maximum principle,...) and numerical experiments illustrate their asymptotic behaviour.
© EDP Sciences, SMAI 2023
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