Shock-accelerated bubbles have long been an intriguing topic for understanding the fundamental physics of turbulence generation and mixing caused by the Richtmyer–Meshkov instability. In this study, the impact of bulk viscosity on the flow morphology of a shock-accelerated cylindrical light bubble in diatomic and polyatomic gases is investigated numerically. An explicit mixed-type modal discontinuous Galerkin scheme with uniform meshes is employed to solve a two-dimensional system of unsteady physical conservation laws derived rigorously from the Boltzmann–Curtiss kinetic equations. We also derive a new complete viscous compressible vorticity transport equation including the bulk viscosity. The numerical results show that, during the interaction between a planar shock wave and a cylindrical light bubble, the bulk viscosity associated with the viscous excess normal stress in diatomic and polyatomic gases plays an important role. The diatomic and polyatomic gases cause significant changes in flow morphology, resulting in complex wave patterns, vorticity generation, vortex formation, and bubble deformation. In contrast to monatomic gases, diatomic and polyatomic gases produce larger rolled-up vortex chains, various inward jet formations, and large mixing zones with strong, large-scale expansion. The effects of diatomic and polyatomic gases are explored in detail through phenomena such as the vorticity generation, degree of nonequilibrium, enstrophy, and dissipation rate. Furthermore, the evolution of the shock trajectories and interface features is investigated. Finally, the effects of bulk viscosity on the flow physics of shock-accelerated cylindrical light bubble are comprehensively analyzed.
Skip Nav Destination
,
,
Article navigation
June 2021
Research Article|
June 09 2021
Impact of bulk viscosity on flow morphology of shock-accelerated cylindrical light bubble in diatomic and polyatomic gases Available to Purchase
Satyvir Singh
;
Satyvir Singh
a)
1
School of Physical and Mathematical Sciences, Nanyang Technological University
, 21 Nanyang Link, Singapore
637371a)Author to whom correspondence should be addressed: [email protected]
Search for other works by this author on:
Marco Battiato
;
Marco Battiato
1
School of Physical and Mathematical Sciences, Nanyang Technological University
, 21 Nanyang Link, Singapore
637371
Search for other works by this author on:
R. S. Myong
R. S. Myong
2
School of Mechanical and Aerospace Engineering and ACTRC, Gyeongsang National University
, Jinju, Gyeongnam 52828, South Korea
Search for other works by this author on:
Satyvir Singh
1,a)
Marco Battiato
1
R. S. Myong
2
1
School of Physical and Mathematical Sciences, Nanyang Technological University
, 21 Nanyang Link, Singapore
637371
2
School of Mechanical and Aerospace Engineering and ACTRC, Gyeongsang National University
, Jinju, Gyeongnam 52828, South Korea
a)Author to whom correspondence should be addressed: [email protected]
Physics of Fluids 33, 066103 (2021)
Article history
Received:
March 23 2021
Accepted:
May 19 2021
Citation
Satyvir Singh, Marco Battiato, R. S. Myong; Impact of bulk viscosity on flow morphology of shock-accelerated cylindrical light bubble in diatomic and polyatomic gases. Physics of Fluids 1 June 2021; 33 (6): 066103. https://doi.org/10.1063/5.0051169
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
Phase behavior of Cacio e Pepe sauce
G. Bartolucci, D. M. Busiello, et al.
How to cook pasta? Physicists view on suggestions for energy saving methods
Phillip Toultchinski, Thomas A. Vilgis
Pour-over coffee: Mixing by a water jet impinging on a granular bed with avalanche dynamics
Ernest Park, Margot Young, et al.
Related Content
Role of Atwood number on flow morphology of a planar shock-accelerated square bubble: A numerical study
Physics of Fluids (December 2020)
Interaction of cylindrical converging shocks with an equilateral triangular SF6 cylinder
Physics of Fluids (August 2019)
Effects of the parameters of inner air cylinder on evolution of annular SF6 cylinder accelerated by a planar shock wave
Physics of Fluids (December 2022)
Visualization of processes in an engine with a rotating detonation wave
AIP Conf. Proc. (December 2020)