Steady evaporation from a spherical and heterogeneous condensed body into vacuum is considered. Inert solid particles, initially embedded in the condensed phase, are liberated and collisionally accelerated by the evaporating gas molecules. A simple mathematical model for the flow is proposed and executed by the Direct Simulation Monte Carlo (DSMC) method. For small Knudsen numbers, the results are compared with a continuum solution including Knudsen layer corrections obtained by a moment method, demonstrating that these corrections are leading order effects in the treatment. © 1997 American Institute of Physics.
Kinetic theory study of steady evaporation from a spherical condensed phase containing inert solid particles
FREZZOTTI, ALDO;
1997-01-01
Abstract
Steady evaporation from a spherical and heterogeneous condensed body into vacuum is considered. Inert solid particles, initially embedded in the condensed phase, are liberated and collisionally accelerated by the evaporating gas molecules. A simple mathematical model for the flow is proposed and executed by the Direct Simulation Monte Carlo (DSMC) method. For small Knudsen numbers, the results are compared with a continuum solution including Knudsen layer corrections obtained by a moment method, demonstrating that these corrections are leading order effects in the treatment. © 1997 American Institute of Physics.File in questo prodotto:
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