Numerical analysis of nonlinear interaction between a gas bubble and free surface in a viscous compressible liquid

被引：14

作者：

Feng, Ji-Tuan ^{[1
]}

Liu, Yun-Long ^{[1
]}

Wang, Shi-Ping ^{[1
]}

Zhang, Shuai ^{[1
,2
]}

Tao, Longbin ^{[3
]}

机构：

[1] Harbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Peoples R China

[2] Harbin Engn Univ, Nanhai Inst, Sanya 572024, Peoples R China

[3] Univ Strathclyde, Dept Naval Architecture Ocean & Marine Engn, Glasgow G4 0LZ, Scotland

来源：

PHYSICS OF FLUIDS | 2023年 / 35卷 / 07期

基金：

中国国家自然科学基金; 黑龙江省自然科学基金;

关键词：

UNDERWATER EXPLOSION; CAVITATION BUBBLES; CONTRAST AGENTS; DYNAMICS; BOUNDARY; OSCILLATIONS; COLLAPSE;

D O I：

10.1063/5.0147605

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Liquid viscosity has a potential effect on bubble dynamics. This paper is concerned with bubble dynamics in a compressible viscous liquid near the free surface. The liquid-gas flow is modeled using the Eulerian finite element method coupled with the volume of fluid method. The numerical results have been shown to be in excellent agreement with those from the spherical bubble theory and experiment. Parametric studies are carried out regarding the Reynolds number Re and the stand-off parameter ?(d). It clearly demonstrated that the liquid viscosity inhibits bubble pulsation, jet flow, free surface jet, and bubble splitting. Quantitatively, as Reynolds number Re decreases, the maximum bubble volume, jet tip velocity, free surface spike, and crown height decrease, and the toroidal bubble splitting weakens. As the stand-off parameter ?(d) increases, the maximum bubble volume, jet velocity, and bubble average pressure peak increase while the height of the free surface spike decreases. Close observation reveals that the free surface crown tends to disappear at small Re or large ?(d), further indicating the complex mechanism behind the crown spike evolution.

引用

页数：14

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