Experimental study of the effect of a passive porous coating on disturbances in a hypersonic boundary layer 2. Effect of the porous coating location
- Autores: Lukashevich S.1, Morozov S.1,2, Shiplyuk A.1,3
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Afiliações:
- Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch
- Novosibirsk State University
- Novosibirsk State Technical University
- Edição: Volume 57, Nº 5 (2016)
- Páginas: 873-878
- Seção: Article
- URL: https://journals.rcsi.science/0021-8944/article/view/159714
- DOI: https://doi.org/10.1134/S002189441605014X
- ID: 159714
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Resumo
The effect of the location of a passive porous coating on natural disturbances in a hypersonic boundary layer is studied experimentally. The experiments are performed in the flow around a sharp cone aligned at a zero angle of attack with the free-stream Mach number M∞ = 5.8, stagnation temperature T0 = 370 ± 5 K, and unit Reynolds numbers Re1∞ = 2.6 · 106, 4.6 · 106, 6.6 · 106, and 107 m−1. The wave characteristics of the boundary layer are calculated with the use of the linear stability theory for flow parameters corresponding to experimental values. A comparison of experimental and predicted results shows that the presence of a porous coating in the region where the second mode is unstable leads to reduction of its amplitude at the measurement point, whereas the presence of a porous coating in the region of second mode stability leads to enhancement of the amplitude.
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Sobre autores
S. Lukashevich
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch
Autor responsável pela correspondência
Email: lukashevich@itam.nsc.ru
Rússia, Novosibirsk, 630090
S. Morozov
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch; Novosibirsk State University
Email: lukashevich@itam.nsc.ru
Rússia, Novosibirsk, 630090; Novosibirsk, 630090
A. Shiplyuk
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch; Novosibirsk State Technical University
Email: lukashevich@itam.nsc.ru
Rússia, Novosibirsk, 630090; Novosibirsk, 630073