Influence of porous-coating thickness on the stability and transition of flat-plate supersonic boundary layer |
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Authors: | S. A. Gaponov Yu. G. Ermolaev A. D. Kosinov V. I. Lysenko N. V. Semenov B. V. Smorodskii |
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Affiliation: | 14264. Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
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Abstract: | In the present study, we examined, both experimentally and theoretically, the influence of porouscoating thickness on the stability and laminar-turbulent transition of flat-plate supersonic boundary layer at free-stream Mach number M∞ = 2. A qualitative agreement between the data calculated by the linear theory of stability and the experimental data on the transition obtained for models with different porous-coating thicknesses was established. We show that with decreasing (within a certain interval) the porouscoating thickness the boundary layer becomes more stable to perturbations, and the laminar-turbulent transition, more delayed. |
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