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Thermophysics and Aeromechanics

2010 year, number 2

The influence of surface porosity on the stability and transition of supersonic boundary layer on a flat plate

S.A. Gaponov, YU.G. Ermolaev, A.D. Kosinov, V.I. Lysenko, N.V. Semenov, B.V. Smorodsky
Keywords: compressible boundary layer, laminar-turbulent transition, hydrodynamic stability
Pages: 259-268


In the present study, we examined, both experimentally and theoretically, the influence of surface permeability on the stability and laminar-turbulent transition of supersonic boundary layer at free-stream Mach number М = 2. A satisfactory agreement was obtained between the data calculated by the linear theory of stability and the data obtained in experiments with natural disturbances performed on models with different porous inserts.