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Development and application of streakline visualization in hypervelocity flows

Lemieux, P. and Hornung, H. (2002) Development and application of streakline visualization in hypervelocity flows. Experiments in Fluids, 33 (1). pp. 188-195. ISSN 0723-4864. doi:10.1007/s00348-002-0433-8.

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A method for visualizing streaklines in hypervelocity flows has been developed. The method uses the high temperatures produced in hypervelocity flows to ablate small amounts of sodium deposited onto a wire stretched across the flow and to broaden the lines in the sodium spectrum. By using a dye laser, tuned to a wavelength close to one of the sodium D-lines, as the light source in shadowgraph or Schlieren visualization, streaklines seeded with sodium become visible through absorption and/or enhanced refractivity. The technique has been used to investigate the stability of the shear layer produced by the curved bow shock on a cylindrically blunted wedge. The results suggest that the shear layer is unstable, exhibiting structures with a wavelength that is comparable to half the nose radius of the body.

Item Type:Article
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Hornung, H.0000-0002-4903-8419
Additional Information:© 2002 Springer-Verlag. Received: 05 December 2001. Accepted: 22 February 2002.
Issue or Number:1
Record Number:CaltechAUTHORS:20170801-103739990
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Official Citation:Lemieux, P. & Hornung, H. Exp Fluids (2002) 33: 188.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:79676
Deposited By: Ruth Sustaita
Deposited On:01 Aug 2017 19:06
Last Modified:15 Nov 2021 17:49

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