A generalized Rusanov method for the Baer‐Nunziato equations with application to DDT processes in condensed porous explosives |
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Authors: | Igor Menshov Alexey Serezhkin |
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Affiliation: | 1. Dukhov Research Institute of Automatics (FSUE VNIIA), Moscow, Russia;2. Keldysh Institute for Applied Mathematics RAS, Moscow, Russia |
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Abstract: | The paper addresses a numerical approach for solving the Baer‐Nunziato equations describing compressible 2‐phase flows. We are developing a finite‐volume method where the numerical flux is approximated with the Godunov scheme based on the Riemann problem solution. The analytical solution to this problem is discussed, and approximate solvers are considered. The obtained theoretical results are applied to develop the discrete model that can be treated as an extension of the Rusanov numerical scheme to the Baer‐Nunziato equations. Numerical results are presented that concern the method verification and also application to the deflagration‐to‐detonation transition (DDT) in porous reactive materials. |
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Keywords: | Baer‐Nunziato equations condensed explosives deflagration‐to‐detonation transition (DDT) Riemann problem solution Rusanov method 2‐phase flow |
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