Action of gas-permeable materials of varied porosity on the supersonic separated flow over a forward-facing step
- Авторы: Postnikov B.1, Lomanovich K.1, Ponomarenko R.1
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Учреждения:
- Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
- Выпуск: Том 25, № 2 (2018)
- Страницы: 191-197
- Раздел: Article
- URL: https://journals.rcsi.science/1531-8699/article/view/217397
- DOI: https://doi.org/10.1134/S086986431802004X
- ID: 217397
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Аннотация
Results of an experimental and numerical study of a supersonic flow over a model forward-facing step with a gas-permeable insert of variable porosity installed upstream of the step are reported. The free-stream Mach number was M = 2.0, 2.5, and 3.0, and the Reynolds number, Re = 5·105. The gas-permeable insert was either a section of a perforated plate or a section of a highly porous permeable cellular material. The flow visualization performed using the shadow method, PIV, and a soot-oil film has shown that the characteristic size of the vortical flow region exhibited a profound decrease on increasing the insert porosity. In numerical calculations performed at high values of that po-rosity, data on the displacement of the recirculation flow region into the porous material were obtained.
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Об авторах
B. Postnikov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Автор, ответственный за переписку.
Email: boris@itam.nsc.ru
Россия, Novosibirsk
K. Lomanovich
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Email: boris@itam.nsc.ru
Россия, Novosibirsk
R. Ponomarenko
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Email: boris@itam.nsc.ru
Россия, Novosibirsk