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Experimental investigation of the hypersonic low-density flow past a half-closed cylindrical cavity

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Abstract

Hypersonic (M∞=21) flow past a half-closed cylindrical cavity with a beveled upstream-facing open end was experimentally investigated in a self-oscillatory regime. The Reynolds numbers, based on the largest dimension of the inlet orifice, were Re=8.5·103 and 2.5·104. The dependence of the pressure fluctuation intensity within the cavity on the fluctuation frequency and the angle between the oncoming stream and the plane of the inlet orifice was determined. The measured data were analyzed on the basis of existing models of fluctuation generation. An electron-beam technique was used to measure the distributions of the average and fluctuation densities in the outer stream. The amplitude and phase characteristics of the outer fluctuations were determined and their relation with the pressure fluctuations within the cavity was established.

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Authors
  1. A. A. Maslov
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  2. S. G. Mironov
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Additional information

Novosibirsk. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 6, pp. 155–160, November–December, 1996.

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Maslov, A.A., Mironov, S.G. Experimental investigation of the hypersonic low-density flow past a half-closed cylindrical cavity. Fluid Dyn 31, 928–932 (1996). https://doi.org/10.1007/BF02030115

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  • DOI: https://doi.org/10.1007/BF02030115

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