Wave motion and heat and mass transfer of the disperse phase under the conditions of low-frequency gas pulsations

The article presents a system of equations of nonstationary wave motion of the disperse phase in a binary vapour–gas medium with account for the heat and mass transfer processes. The effect of pulsations of moist air and superheated steam on motion of gas suspension and rate of heat and mass transfer under the conditions of wave and resonance modes has been investigated in the course of the computational experiment. In particular, it is shown that in the range of the parameters studied gas pulsations lead to enhancement of interphase heat and mass transfer. Use of superheated vapour as a carrying phase results in heat and mass transfer enhancement compared with moist air. An analytical expression has been obtained for determining the frequency of gas velocity oscillations in a low-frequency region, at which maximum intensity of heat transfer is attained. A schematic of the pneumatic setup equipped with the chamber of pulse combustion with an aerodynamic valve is presented.