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Journal of Applied Mechanics and Technical Physics

2002 year, number 2

Stiffness problem in modeling wave flows of heterogeneous media with a three- temperature scheme of interphase heat and mass transfer

D. V. Sadin
Mozhaiskii Military Space-Engineering University, St. Petersburg 197082
Pages: 286-290

Abstract

The numerical modeling of wave flows of
heterogeneous media with a three-
temperature scheme of interphase heat
and mass transfer involves the problem
of equation stiffness. A discrete model
of improved stability was developed to
describe these processes. Test
calculations of the interaction of a
shock wave with a bounded layer of a
mixture of a gas and droplets assuming a
discrete model over a wide range of
initial data showed that the stability
conditions do not depend on the rate of
interphase interaction (C-stability).