Abstract
The propagation of acoustic waves in two-fraction mixtures of gas with vapor, droplets and solid particles of different materials and sizes in the presence of phase transitions is investigated. A mathematical model is presented, the dispersion and wave equations are obtained, and the dispersion curves are calculated. The relative sonic velocity and the attenuation decrement on the wave length are analyzed as functions of the oscillation frequency for an “air-vapor-liquid droplet-sand particle” mixture. Using the fast Fourier transform, the propagation of pulse disturbances in the two-fraction disperse systems is calculated.
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