Experimental study of the influence of supersonic boundary-layer suction on its stability to controlled disturbances

A pioneering experimental study of the influence of distributed suction of a supersonic boundary layer on a flat plate on its stability to controlled (artificial) disturbances at the freestream Mach number M ∞ = 2 is performed. Experimental results are compared to numerical predictions, and good qua...

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Bibliographic Details
Published in:Thermophysics and aeromechanics 2024, Vol.31 (3), p.437-444
Main Authors: Lysenko, V. I., Smorodsky, B. V., Yermolaev, Yu. G., Tagaev, S. N., Kosinov, A. D.
Format: Article
Language:English
Subjects:
Boundary layer stability
Disturbances
Flat plates
Mach number
Numerical prediction
Physics
Physics and Astronomy
Stability
Suction
Supersonic boundary layers
Thermodynamics
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Summary:A pioneering experimental study of the influence of distributed suction of a supersonic boundary layer on a flat plate on its stability to controlled (artificial) disturbances at the freestream Mach number M ∞ = 2 is performed. Experimental results are compared to numerical predictions, and good quantitative agreement is observed. The conclusions of the linear stability theory that suction of the type considered in the study stabilizes the flow in a supersonic boundary layer are experimentally validated; moreover, the stabilizing effect of suction is more pronounced than the destabilizing effect of surface porosity.
ISSN:1531-8699
0869-8643
1531-8699
DOI:10.1134/S0869864324030041