Condensation Induced by Rarefaction Waves and Reflected Rarefaction Waves

In this paper, homogeneous condensation induced by unsteady rarefaction waves and reflected rarefaction waves in vapor-gas mixture was investigated experimentally. It is shown that the temperature of condensation onset during very fast unsteady expansion in vapor-gas mixture is much lower than that during equilibrium process in the atmosphere. It is of interest to indicate that the size of droplets approximates a constant, but the number density and the mass density of droplets change rapidly in the region of static flow.