Abstract
A The paper presents theoretical analysis of a two-phase medium model for describing shock-wave processes in dense gas particle mixtures, taking into account the chaotic motion and collisions of particles. Hyperbolicity regions and composite-type domains are identified in the governing system of equations. It is shown that the hyperbolicity region expands beyond the collisionless model. An approximate hyperbolized model is presented. Numerical solutions of the problem on the development of various shock-wave structure types are compared. The convergence properties in numerical simulations of non-conservative composite-type equations were established using the Harten and Gentry–Martin–Daly schemes. The conditions of the hyperbolized model applicability to different types of flows are obtained. It is shown that, in the general case, shock-wave processes in gas suspensions should preferably be analyzed within a complete model.
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The work was supported by the Russian Science Foundation (project no. 16-19-00010).
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Translated by I. Pertsovskaya
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Fedorov, A.V., Khmel, T.A. Qualitative Properties of the Collisional Model for Describing Shock-Wave Dynamics in Gas Suspensions. Math Models Comput Simul 11, 818–830 (2019). https://doi.org/10.1134/S2070048219050077
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DOI: https://doi.org/10.1134/S2070048219050077