Propagation of acoustic waves through gas-liquid bubbly flows in pipes

Abstract

Main factors which influence on the acoustic waves trajectories in two-phase gas-liquid bubbly flows in pipes are taken into account. A theoretical model for the calculation of these trajectories as well as trajectories of acoustic waves in the free gas-liquid bubbly flows is proposed. Calculations of the trajectories with a personal computer are made for air-water bubbly flow at various flow velocities, void fractions and acoustic waves input angles by using this model. It is found that form of the propagation trajectories of acoustic waves in two-phase bubbly flows, especially if a fractional volume of gas bubbles is small, may differ from a straight lines significantly.