Abstract
Propagation of pressure waves in a liquid containing gas bubbles was investigated in detail by theoretical and experimental methods [1–5]. In particular, a finiteduration nonlinear perturbation propagating in a liquid with gas bubbles was shown to decay into solitary waves (solitons). The evolution, structure, and attenuation of these solitons have been studied in detail. New types of wave structures, multisolitons, have been discovered and investigated in a liquid containing gas bubbles of two different dimensions for various ratios of bubble radii [6, 7]. The effect of both the heterogeneity of a gas–liquid mixture and compressibility of the liquid on the pressure-wave structure was investigated in [8, 9]. The attenuation and structure of moderateamplitude pressure waves propagating either in a liquid containing bubbles of two different gases or in stratified bubble media were studied experimentally in [10, 11]. Generation of high-power pressure pulses by spherical bubble clusters was investigated numerically in [12].
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