6. Physics of a Fluid, Neutral and Ionized Gases

INFLUENCE OF DISPERSED TANGENTIAL HEAVY-GAS BLOWING INTO THE SUPERSONIC BOUNDARY-LAYER ON ITS STABILITY

Vladimir I. Lysenko
1. Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences Novosibirsk, Russian Federation
vl@itam.nsc.ru
Sergey A. Gaponov
1. Khristianovich Institute of Theoretical and Applied Mechanics SB RAS Novosibirsk, Russian Federation
gaponov@itam.nsc.ru
Nikolay N. Zubkov
1. Bauman Moscow State Technical University 5, 2nd Bauman Str., Moscow, 105005, Russian Federation
zoubkovn@bmstu.ru
The material was received by the Editorial Board: 25.01.2018
Joint theoretical and experimental investigation of the influence of the distributed tangential blowing (into a boundary layer) heavy gas (sulfur hexafluoride of SF6) on hydrodynamic stability to natural disturbances of the supersonic flat-plate boundary layer at free-stream Mach number M = 2 have been performed. For the first time experimentally it is shown that in case of such blowing there is a boundary-layer stabilization, generally due to reduction of growth of disturbances at higher frequencies. At the same time the frequency corresponding to the maximum spatial disturbance amplification rates decreases.

Keywords:
compressible boundary layer, permeability, blowing, heavy gas, hydrodynamic stability.
УДК 532.526  

INFLUENCE OF DISPERSED TANGENTIAL HEAVY-GAS BLOWING INTO THE SUPERSONIC BOUNDARY-LAYER ON ITS STABILITY 
References: Lysenko V. I., Gaponov S. A., Zubkov N. N., Smorodsky B. V., Ermolaev Yu. G., Kosinov A. D. INFLUENCE OF DISPERSED TANGENTIAL HEAVY-GAS BLOWING INTO THE SUPERSONIC BOUNDARY-LAYER ON ITS STABILITY . Siberian Journal of Physics . 2018, vol. 13, no. 1. P. 25–32. (in Russ.). DOI: 10.25205/2541-9447-2018-13-1-25-32