Study of Angular Dependence of Sound Absorption Coefficient at the Fluid - Solid Interface

Abstract

The problem of sound wave energy dissipation at plane interface of liquid media with arbitrary sets of real acoustic and thermodynamic parameters was firstly considered in the 80's. Studies have currently been conducted on the further development of this problem solving. The main objective of this study is to show that the formation of acoustic boundary layer near surface of a solid leads to additional process of acoustic energy dissipation appearance. The coefficients of reflection and passage of the sound wave become complex, it leads to the appearance of additional phase shifts in the reflected and refracted waves.