Numerical study of the effects of cooling on evolution of unsteady disturbances and transition to turbulence in a boundary layer at flow mach number M = 6

D. V. Khotyanovsky, S. P. Borisov, A. A. Shershnev, A. N. Kudryavtsev

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

Direct Numerical Simulation (DNS) is used to investigate linear and nonlinear stages of development of unstable disturbances and the transition to turbulence in a supersonic boundary layer on a flat plate with the Mach number of the external flow M = 6. The computations are carried out for the case of a cooled surface at a ratio of the plate temperature to the free-stream temperature Tw/T = 1.4. According to linear stability theory calculations, the two-dimensional waves of the first mode in the boundary layer are completely stabilized at the considered flow parameters. The growth rates are maximum for unstable two-dimensional disturbances of the second mode, while the three-dimensional waves of the second mode are also unstable. The results of DNS of linear and nonlinear stages of development of such disturbances are compared with the results of earlier computations of the laminar-turbulent transition on a flat plate with a temperature corresponding to the case of a thermally insulated surface, Tw/T = 7.

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 pages6
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

  • STABILIZATION
  • SIMULATION

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