About waveguide propagation of sound beams in a nonlinear medium. Overview

The review is devoted to the presentation of the conditions under which we obtain the effect of self-action of acoustic beams in a nonlinear medium. For this, we describe the formalism of obtaining the solution of the dimensionless Khokhlov-Zabolotskaya equations and finding appropriate Khokhlov similarity criteria, in which there is effect of self-action of acoustic beams. Provides various forms of Khokhlov-Zabolotskaya equations. Examines the issue associated with accurately set parameters in the Khokhlov-Zabolotskaya equation.