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Simulation of wave processes in a vapor-liquid medium

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Abstract

Numerical methods for the simulation of nonlinear wave processes in a vapor-liquid medium with a model two-phase spherical symmetric cell, with a pressure jump at its external boundary are considered. The viscosity and compressibility of the liquid, as well as the space variation of pressure in the vapor, are neglected. The problem is described by the heat equations in the vapor and liquid, and by a system of ODEs for the velocity, pressure, and radius at the bubble boundary. The equations are discretized in space by an implicit finite-volume scheme on a dynamic adaptive grid with grid refinement near the bubble boundary. The total time derivative is approximated by a method of backward characteristics. “Nonlinear” iterations are implemented at each time step to provide a specified high accuracy. The results of numerical experiments are presented and discussed for the critical thermodynamic parameters of water, for some initial values of the bubble radius and pressure jump.

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Correspondence to V. G. Gasenko.

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Original Russian Text © V.G. Gasenko, G.V. Demidov, V.P. Il’in, I.A. Shmakov, 2012, published in Sibirskii Zhurnal Vychislitel’noi Matematiki, 2012, Vol. 15, No. 3, pp. 261–270.

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Gasenko, V.G., Demidov, G.V., Il’in, V.P. et al. Simulation of wave processes in a vapor-liquid medium. Numer. Analys. Appl. 5, 213–221 (2012). https://doi.org/10.1134/S1995423912030032

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