Two properties of two-velocity two-pressure models for two-phase flows
نویسنده
چکیده
We study a class of models of compressible two-phase flows. This class, which includes the Baer–Nunziato model, is based on the assumption that each phase is described by its own pressure, velocity and temperature and on the use of void fractions obtained from averaging process. These models are nonconservative and non-strictly hyperbolic. We prove that the mixture entropy is non-strictly convex and that the system admits a symmetric form. Key-words. Two-phase flows, entropy, symmetrizable system. AMS subject classifications. 76T05, 35L60, 35F55.
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