Investigation of coupling effect on the evolution of Richtmyer-Meshkov instability at double heavy square bubbles

Singh, Satyvir; Jalleli, Dhouha Taib

doi:10.1007/s11433-023-2218-2

Cited by 9 publications

(1 citation statement)

References 59 publications

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“…Subsequent research by Singh and colleagues [52,53] provided a comparative numerical study of RM phenomena between shock-driven square and rectangular bubbles containing light gases. In their latest work, Singh and Jalleli [54] explored numerically the coupled effects on the development of RM phenomena within double heavy square bubbles.…”

Section: Introductionmentioning

confidence: 99%

Analyzing Richtmyer–Meshkov Phenomena Triggered by Forward-Triangular Light Gas Bubbles: A Numerical Perspective

Singh,

Msmali

2024

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In this paper, we present a numerical investigation into elucidating the complex dynamics of Richtmyer–Meshkov (RM) phenomena initiated by the interaction of shock waves with forward-triangular light gas bubbles. The triangular bubble is filled with neon, helium, or hydrogen gas, and is surrounded by nitrogen gas. Three different shock Mach numbers are considered: Ms=1.12,1.21, and 1.41. For the numerical simulations, a two-dimensional system of compressible Euler equations for two-component gas flows is solved by utilizing the high-fidelity explicit modal discontinuous Galerkin technique. For validation, the numerical results are compared with the existing experimental results and are found to be in good agreement. The numerical model explores the impact of the Atwood number on the underlying mechanisms of the shock-induced forward-triangle bubble, encompassing aspects such as flow evolution, wave characteristics, jet formation, generation of vorticity, interface features, and integral diagnostics. Furthermore, the impacts of shock strengths and positive Atwood numbers on the flow evolution are also analyzed. Insights gained from this numerical perspective enhance our understanding of RM phenomena triggered by forward-triangular light gas bubbles, with implications for diverse applications in engineering, astrophysics, and fusion research.

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Section: Introductionmentioning

confidence: 99%