TY - GEN
T1 - Influence of heavy-gas injection into supersonic boundary layer on its stability to controlled disturbances
AU - Lysenko, Vladimir I.
AU - Smorodsky, Boris V.
AU - Ermolaev, Yuri G.
AU - Kosinov, Alexander D.
PY - 2019/7/26
Y1 - 2019/7/26
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85070540089&partnerID=8YFLogxK
U2 - 10.1063/1.5117488
DO - 10.1063/1.5117488
M3 - Conference contribution
AN - SCOPUS:85070540089
T3 - AIP Conference Proceedings
BT - High Energy Processes in Condensed Matter, HEPCM 2019
A2 - Fomin, Vasily
PB - American Institute of Physics Inc.
T2 - 26th All-Russian Conference on High Energy Processes in Condensed Matter: Dedicated to the 150th Anniversary of the Birth of S.A. Chaplygin, HEPCM 2019
Y2 - 3 April 2019 through 5 April 2019
ER -