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Abstract <p>With a short-term lateral impact of a shock wave (from Supernova, for example) on a contact discontinuity between gases of different densities, numerous turbulent vortices arise—Richtmyer–Meshkov instability. The current work compares the results of a numerical solution of this problem in a specific two-dimensional formulation using various gas dynamic codes (FVM and SPH approaches). Various formulations of initial conditions, including those close to astrophysical conditions, have been studied. A turbulent spectrum was constructed and analyzed for each calculation. Parallel computations were carried out on GPU and a computer with distributed memory.</p>

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Comparison of the Turbulent Spectrum in the Development of Richtmayer–Meshkov Instability Numerically Calculated with Different Approaches

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • V. V. Grigoryev,
  • R. V. Zhalnin

摘要

Abstract

With a short-term lateral impact of a shock wave (from Supernova, for example) on a contact discontinuity between gases of different densities, numerous turbulent vortices arise—Richtmyer–Meshkov instability. The current work compares the results of a numerical solution of this problem in a specific two-dimensional formulation using various gas dynamic codes (FVM and SPH approaches). Various formulations of initial conditions, including those close to astrophysical conditions, have been studied. A turbulent spectrum was constructed and analyzed for each calculation. Parallel computations were carried out on GPU and a computer with distributed memory.