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A new surface-streamline flow-visualization technique

Published online by Cambridge University Press:  20 April 2006

L. S. Langston  and
M. T. Boyle
L. S. Langston
Affiliation:
Mechanical Engineering Department, University of Connecticut. Storrs, Connecticut 06268, U.S.A.
M. T. Boyle
Affiliation:
Mechanical Engineering Department, University of Connecticut. Storrs, Connecticut 06268, U.S.A.
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Abstract

This paper describes a new surface-streamline flow-visualization technique that is suitable for use in low-speed wind tunnels or other low-speed gas flows. The technique provides a permanent record of ink traces that show surface-streamline direction and shape. The visualization of the endwall surface flow of the horseshoe-vortex system formed around the base of a cylinder by a separating turbulent boundary layer is used as an example. The results of the new technique are compared with those obtained from a conventional flow-visualization technique. Good agreement was found between the two, with the new technique appearing to give more-accurate surface streamlines.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 125 , December 1982 , pp. 53 - 57
Copyright
© 1982 Cambridge University Press

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