Acoustic disturbances in a mixture of liquid with vapor-gas bubbles

Results are given of theoretical study into the propagation of acoustic disturbances in mixtures of liquid with vapor-gas bubbles in view of interphase diffusion mass transfer. A unified general dispersion relation is obtained, which defines the propagation of harmonic disturbances in two-phase mixtures of liquid with bubbles of vapor and gas in the plane, spherical, and cylindrical cases. Numerical calculations are performed of the evolution of weak pulse disturbances of pressure of different geometries in liquids with vapor-gas bubbles at different values of parameters of the medium. It is demonstrated that the velocity of propagation of waves significantly decreases with increasing initial concentration of vapor in vapor-gas bubbles, and the wave damping significantly increases. In so doing, the effect of vapor content on the dynamics of acoustic disturbances significantly increases with the initial volume content of bubbles. The nonmonotonic dependence of damping of pulse disturbance of pressure on the initial radius of bubbles in liquid with vapor-gas bubbles in the presence of phase transformations is demonstrated.