Impingement of a supersonic underexpanded jet onto obstacles with different permeabilities

被引:0
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作者
V. I. Zapryagaev
A. V. Solotchin
I. N. Kavun
D. A. Yarovsky
机构
[1] Russian Academy of Sciences,Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch
关键词
supersonic underexpanded jet; porous obstacle; permeability; level of acoustic disturbances;
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摘要
Results of an experimental study of the flow structure and characteristics of flow oscillations induced by impinging of a supersonic underexpanded jet onto obstacles made of permeable and impermeable materials are presented. Spectral characteristics of the acoustic field in the regime of unsteady interaction between the jet and the obstacle are determined. The influence of permeability of porous obstacles on these characteristics is identified.
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页码:727 / 733
页数:6
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