ACOUSTICS OF A VISCOELASTIC FLUID WITH GAS BUBBLES COATED WITH A VISCOELASTIC SHELL

An equation of radial vibrations of a gas bubble covered with a viscoelastic shell in a viscoelastic fl uid is obtained on the basis of the Kelvin–Voigt and Maxwell rheological models. For a bubble medium subjected to small perturbations, a dispersion equation is written with account for the interphase heat transfer. Based on the indicated rheological models, the infl uence of the viscoelastic shell of the bubble on the dynamics of the acoustic waves generated by the bubble has been investigated. The results of calculations for particular cases are compared with the experimental data available in the literature.
   
Author:  D. A. Gubaidullin ,  Yu. V. Fedorov
Keywords:  acoustic wave, gas bubble, viscoelastic fl uid, dispersion equation, Kelvin–Voigt and Maxwell models
Page:  788