Influence of heavy-gas injection into supersonic boundary layer on its stability to controlled disturbances

Vladimir I. Lysenko, Boris V. Smorodsky, Yuri G. Ermolaev, Alexander D. Kosinov

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

Abstract

The experimental investigation of the influence of the distributed heavy gas (sulfur hexafluoride of SF6) injection (into the wall layer of a boundary layer) on the hydrodynamic stability in relation to artificial (controlled) disturbances of the supersonic flat-plate boundary layer at free-stream Mach number M=2 have been performed. Controlled disturbances have been introduced into the boundary layer past the model by means of a harmonic point glow discharge disturbance generator. At different speeds of injection of sulfur hexafluoride, β-spectra (mean-square disturbance amplitudes depending on a longitudinal wave number β) measured at exciting frequency f=14 kHz, were defined and compared. It is shown (and for the first time experimentally for controlled disturbances) that such heavy-gas (sulfur-hexafluoride) injection leads to the boundary-layer stabilization, at least, at an exciting frequency.

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 pages4
ISBN (Electronic)9780735418653
DOIs
Publication statusPublished - 26 Jul 2019
Externally publishedYes
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

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