Direct Monte Carlo simulation of subsonic evaporation into a half-space
A.A. Morozov, E.Ya. Gatapova
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: subsonic evaporation, direct simulation Monte Carlo method, DSMC
Abstract
Modeling of processes with phase transition in confined spaces needs high-accuracy simulations with account for non-equilibrium. In the present paper, we use the direct simulation Monte Carlo method for describing evaporation into a vapor-filled half-space with a subsonic monoatomic gas flow. Two types of boundary conditions for open half-space are considered: the interaction approach with consecutive calculating of temperature and pressure, and the approach with a fixed velocity. We compared these approaches for obtaining the accurate solution of the problem. The fixed-velocity approach provides a higher accuracy for the flow with a low Mach number. The calculated results are compared with a known solution of a model kinetic equation.
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