Terminal velocities and vortex dynamics of weakly compressible Rayleigh-Taylor Instability

被引：2

作者：

Zhou, Youlizi ^{[1
]}

Zou, Shufan ^{[2
]}

Pu, Yudong ^{[3
]}

Xue, Quanxi ^{[4
]}

Liu, Hao ^{[1
]}

机构：

[1] Hunan Univ, Sch Phys & Elect, Dept Appl Phys, Changsha 410082, Peoples R China

[2] Natl Univ Defense Technol, Coll Aerosp Sci & Technol, Dept Aerosp Engn, Changsha 410073, Peoples R China

[3] China Acad Engn Phys, Laser Fus Res Ctr, Mianyang 621900, Sichuan, Peoples R China

[4] Northwest Inst Nucl Technol, State Key Lab Laser Interact Matter, Xian 710024, Peoples R China

来源：

AIP ADVANCES | 2022年 / 12卷 / 01期

基金：

国家重点研发计划;

关键词：

SMOOTHED PARTICLE HYDRODYNAMICS; NUMERICAL-SIMULATION; FLOWS;

D O I：

10.1063/5.0079996

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The evolution of Rayleigh-Taylor instability (RTI) for weakly compressible fluids was numerically simulated using the smooth particle hydrodynamics method. It was found that the speed of spikes and bubbles in most cases will reach a stable value, which is called terminal speed. The calculated terminal speed of the bubble was found to be systematically higher than the theoretical model based on the potential flow hypothesis. This deviation could be modified by including the vortex effect on the terminal speed of the bubble. A significant correlation between the bubble speed and the vorticity in the bubble head was found during the whole evolution of RTI. The analysis of the vortex dynamics in the bubble head region during the terminal speed stage shows that there is a balance between the baroclinic production, viscous dissipation, and convective transport of the vorticity. (c) 2022 Author(s).

引用

页数：15

共 76 条

[1] Rayleigh-Taylor turbulent mixing of immiscible, miscible and stratified fluids [J].

Abarzhi, SI ;

Gorobets, A ;

Sreenivasan, KR .

PHYSICS OF FLUIDS, 2005, 17 (08) :1-4

[2]

[Anonymous], 2003, SMOOTHED PARTICLE HY

[3]

[Anonymous], 1981, Hydrodynamic and Hydromagnetic Stability

[4] Combined effect of viscosity and vorticity on single mode Rayleigh-Taylor instability bubble growth [J].

Banerjee, Rahul ;

Mandal, Labakanta ;

Roy, S. ;

Khan, M. ;

Gupta, M. R. .

PHYSICS OF PLASMAS, 2011, 18 (02)

[5] Bubble acceleration in the ablative Rayleigh-Taylor instability [J].

Betti, R. ;

Sanz, J. .

PHYSICAL REVIEW LETTERS, 2006, 97 (20)

[6] Revisiting the late-time growth of single-mode Rayleigh-Taylor instability and the role of vorticity [J].

Bian, Xin ;

Aluie, Hussein ;

Zhao, Dongxiao ;

Zhang, Huasen ;

Livescu, Daniel .

PHYSICA D-NONLINEAR PHENOMENA, 2020, 403

[7]

Birkhoff G., 1962, P S APPL MATH, VXIII, P55, DOI DOI 10.1090/PSAPM/013/0137423

[8] Incompressible Rayleigh-Taylor Turbulence [J].

Boffetta, Guido ;

Mazzino, Andrea .

ANNUAL REVIEW OF FLUID MECHANICS, VOL 49, 2017, 49 :119-143

[9] Morphological and non-equilibrium analysis of coupled Rayleigh-Taylor-Kelvin-Helmholtz instability [J].

Chen, Feng ;

Xu, Aiguo ;

Zhang, Yudong ;

Zeng, Qingkai .

PHYSICS OF FLUIDS, 2020, 32 (10)

[10] Collaboration and competition between Richtmyer-Meshkov instability and Rayleigh-Taylor instability [J].

Chen, Feng ;

Xu, Aiguo ;

Zhang, Guangcai .

PHYSICS OF FLUIDS, 2018, 30 (10)

← 1 2 3 4 5 6 7 8 →