Article

Heat and Mass Transfer and Physical Gasdynamics
2021. V. 59. № 4.
Gubaidullin D.A., Fedorov Yu.V.
Acoustic waves in a liquid with gas inclusions containing a liquid layer and a viscoelastic shell
Annotation
In this paper, a modified Rayleigh-Lamb equation is derived that takes into account the radial oscillations of a gas bubble coated with a viscoelastic shell on whose inner surface a thin layer of liquid is distributed. For the case of small perturbations, a dispersion equation is found that takes into account interphase heat transfer between a gas, a liquid interlayer, a viscoelastic shell, and a carrier fluid. An analytical expression of the equilibrium speed of sound is written out and its dependence on the dimensions of the liquid layer, viscoelastic shell, and perturbation frequency is established. The difference in the size of the inner liquid layer in the encapsulated bubble by the dynamics of acoustic waves is illustrated. The effect of the dependences of the shear modulus and viscosity of butyl rubber on the frequency of disturbances at different temperatures on the phase velocity and attenuation coefficient curves is shown. A comparison of the theory with experimental data is given.
Article reference:
Gubaidullin D.A., Fedorov Yu.V. Acoustic waves in a liquid with gas inclusions containing a liquid layer and a viscoelastic shell, High Temp., 2021. V. 59. № 4. P. 0