The Schlieren Method Applied to Flow Visualization in a Water Tunnel

[+] Author and Article Information
Richard E. Bland, Thomas J. Pelick

Ordnance Research Laboratory, The Pennsylvania State University, University Park, Pa.

J. Basic Eng 84(4), 587-592 (Dec 01, 1962) (6 pages) doi:10.1115/1.3658718 History: Received June 28, 1961; Online November 04, 2011


The adaption of the schlieren method for the purpose of observing flow in water is a recent development at the Garfield Thomas Water Tunnel. Flow is shown over an opening and over a semicylinder for a range of Reynolds numbers of 2.5 × 104 to 25 × 104 . The relative effects of temperature and pressure as they affect the index of refraction are treated. The relative persistency of a temperature gradient in air and water is considered, and the relative effects in air and water of a chosen density gradient are calculated.

Copyright © 1962 by ASME
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