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Proceedings Paper

Flow instability induced by spiked bodies
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Paper Abstract

In order to investigate the unsteady flow field around a spiked body in supersonic flow, time-resolved color schlieren visualization was applied using a high-speed video camera which could take up to 1 000 000 frames per second at full frame resolution. Conically and spherically tipped spikes of six different lengths could be attached at the center of the model and their effect on the flow unsteadiness was visually observed. The obtained images revealed in great detail the interaction between the incoming free stream flow and the high-pressure region near the model base, which could make its presence known upstream at the tip of the spike by means of displacing the boundary layer on the spike and subsequently inducing a large-scale instability of the flow.

Paper Details

Date Published: 10 February 2009
PDF: 8 pages
Proc. SPIE 7126, 28th International Congress on High-Speed Imaging and Photonics, 71260K (10 February 2009); doi: 10.1117/12.823751
Show Author Affiliations
Koju Hiraki, Kyushu Institute of Technology (Japan)
Harald Kleine, UNSW@ADFA (Australia)
Hirotaka Maruyama, Japan Broadcasting Corp. (Japan)
Tetsuya Hayashida, Japan Broadcasting Corp. (Japan)
Kazuya Kitamura, Japan Broadcasting Corp. (Japan)
Jun Yonai, Japan Broadcasting Corp. (Japan)
Takashi Nakajima, Japan Aerospace Exploration Agency (Japan)
Goji Etoh, Kinki Univ. (Japan)


Published in SPIE Proceedings Vol. 7126:
28th International Congress on High-Speed Imaging and Photonics
Harald Kleine; Martha Patricia Butron Guillen, Editor(s)

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