| Abstract: | The reflection of a sound wave traveling through saturated vapor by the flat surface of the condensed phase is considered. It is shown that the intensity of the reflected wave is less than in the absence of evaporation and depends nonmonotonically on the angle of incidence, the position of the minimum being determined by the coefficient of condensation and independent of the viscous and heat conducting properties of the gas. The effect can be used to measure the condensation coefficient. The structure of the layers that arise near the surface is considered. A new type of acoustic flow with a velocity of the order of the amplitude of the speed of sound is found.Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. A, 149–156, July–August, 1988. |
