Numerical simulation of the instability development in a compressible mixing layer using kinetic and continuum approaches

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Abstract

The Kelvin-Helmholtz instability developing in the compressible mixing layer is simulated numerically using both the kinetic and continuum approaches. The computations are performed for a spatially periodic mixing layer at subsonic convective Mach numbers and low Reynolds numbers. The main part of the kinetic simulations are carried out with the Shakhov model kinetic equation but the simulations based on the Boltzmann equation are also conducted. A deterministic numerical method that directly solves the kinetic equations on a finite-difference grid in the multidimensional phase space is used. The computational code is adapted for implementation on hybrid computational clusters combining CPUs and GPUs. Navier-Stokes simulations of the Kelvin-Helmholtz instability are also performed and their results are compared with those of kinetic simulations.

Original languageEnglish
Title of host publicationHigh Energy Processes in Condensed Matter, HEPCM 2019
Subtitle of host publicationProceedings of the XXVI Conference on High-Energy Processes in Condensed Matter, dedicated to the 150th anniversary of the birth of S.A. Chaplygin
EditorsVasily Fomin
PublisherAmerican Institute of Physics Inc.
Number of pages7
ISBN (Electronic)9780735418653
DOIs
Publication statusPublished - 26 Jul 2019
Event26th All-Russian Conference on High Energy Processes in Condensed Matter: Dedicated to the 150th Anniversary of the Birth of S.A. Chaplygin, HEPCM 2019 - Novosibirsk, Russian Federation
Duration: 3 Apr 20195 Apr 2019

Publication series

NameAIP Conference Proceedings
Volume2125
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference26th All-Russian Conference on High Energy Processes in Condensed Matter: Dedicated to the 150th Anniversary of the Birth of S.A. Chaplygin, HEPCM 2019
CountryRussian Federation
CityNovosibirsk
Period03.04.201905.04.2019

Keywords

  • SHEAR-LAYER
  • STABILITY

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