Open AccessThe problem spreading acoustic waves in a porous environment with air bubbles on por walls
Author(s) -
Л. Ф. Ситдикова,
И. К. Гималтдинов
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1614/1/012088
Subject(s) - porous medium , attenuation , mechanics , porosity , dispersion (optics) , dispersion relation , wave propagation , acoustic attenuation , acoustic wave , acoustics , materials science , physics , optics , composite material
The propagation of acoustic waves in a porous medium with air bubbles on the pore walls is numerically studied. Based on the equations of mechanics of multiphase media, a dispersion relation is obtained that describes the dependence of the complex wave vector on frequency, on the basis of which the dependence of the phase velocity and attenuation coefficient on frequency for “fast” and “slow” waves is studied. The calculation results make it possible to evaluate the effect of gas bubbles on the propagation of sound waves in a porous medium with bubbles on the pore walls. The study was carried out with the financial support of the Russian Federal Property Fund in the framework of the scientific project No. 19-31-60015.