带有全氟碳化物液滴的粘弹性液体在相变情况下的声学特性

IF 0.8 Q2 MATHEMATICS Lobachevskii Journal of Mathematics Pub Date : 2024-08-28 DOI:10.1134/s1995080224602169
D. A. Gubaidullin, D. D. Gubaidullina, Yu. V. Fedorov
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引用次数: 0

摘要

摘要 在这项工作中,推导出了一个修正的 Rayleigh-Lamb 方程,该方程考虑到了在粘弹性液体中中心带有气泡的全氟化碳液滴的径向振荡。载体介质的粘弹性已根据齐纳流变模型考虑在内。对于小的包含振荡,解决了蒸汽、液相和载液之间的传热和传质问题。能量方程已经求出。根据所得到的夹杂物径向振荡方程、能量方程和著名的气泡液体波方程,确定了分散关系。对于中心含有八氟丙烷液滴和气泡的聚二甲基硅氧烷混合物,绘制了相速度和衰减系数对扰动频率的依赖关系图。说明了弹性载液的剪切模量和弛豫时间对声波动力学的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Acoustics of a Viscoelastic Liquid with Perfluorocarbon Droplets in the Presence of Phase Transitions

Abstract

In this work, a modified Rayleigh–Lamb equation which takes into account the radial oscillations of a perfluorocarbon droplet with a vapor bubble in the center in a viscoelastic liquid has been derived. The viscoelasticity of the carrier medium has been taken into account based on the Zener rheological model. For small inclusion oscillations, the problem of heat and mass transfer between vapor, liquid phase and carrier liquid has been solved. The energy equation has been found. Based on the obtained equations of radial oscillations of the inclusion, energy and the well-known wave equation for a bubbly liquid, the dispersion relation has been determined. For a mixture of polydimethylsiloxane with droplets of octafluoropropane C\({}_{3}\)F\({}_{8}\) and vapor bubbles in the center, the dependencies of the phase velocity and attenuation coefficient on the perturbation frequency have been plotted. The influence of the shear modulus and relaxation time of the elastic carrier liquid on the dynamics of acoustic waves has been illustrated.

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来源期刊
CiteScore
1.50
自引率
42.90%
发文量
127
期刊介绍: Lobachevskii Journal of Mathematics is an international peer reviewed journal published in collaboration with the Russian Academy of Sciences and Kazan Federal University. The journal covers mathematical topics associated with the name of famous Russian mathematician Nikolai Lobachevsky (Lobachevskii). The journal publishes research articles on geometry and topology, algebra, complex analysis, functional analysis, differential equations and mathematical physics, probability theory and stochastic processes, computational mathematics, mathematical modeling, numerical methods and program complexes, computer science, optimal control, and theory of algorithms as well as applied mathematics. The journal welcomes manuscripts from all countries in the English language.
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