Abstract

Method of direct numerical solution of the kinetic equation for the drop size distribution function was proposed for simulation of the bulk condensation of supersaturated vapor. Unlike the method of moments, the approach proposed is unrestricted in the Knudsen number. This approach was tested on a relaxation problem with an instantaneous increase in the supersaturation ratio to a given value. Results for large Knudsen number are in good agreement with the results obtained by the method of moments. It is shown that method of moments can be used for solution of the kinetic equation at small Knudsen numbers only if macro parameters should be found.

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