Propagation of nonlinear waves in gas-liquid media with a gas content variable in space (Q1082217)

A study is made of the propagation of nonlinear waves in gas-liquid systems of bubble structure with a gas content which is variable in the direction of propagation of the wave. It is shown that it is possible in a number of cases to amplify the pressure waves. Restrictions on the degree of homogeneity of the gas content are obtained such that, when they are fulfilled, this amplification is possible. The study also covers the effect of inhomogeneity in the gas content on the structure of nonlinear steady waves of the ''soliton'' and ''shock wave'' types.