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Home Archives Thermal Letter Officers Future meetings Assembly for International Heat Transfer Conferences

ISBN : 0-89116-559-2

International Heat Transfer Conference 8
1986, 17-22 August, San Francisco, USA

MEASUREMENT OF NATURAL CONVECTION BY SPECKLE PHOTOGRAPHY

Get access DOI: 10.1615/IHTC8.2630
pages 531-535

Abstract

The principle of speckle photography can be applied for the measurement of density variations in fluids. A modification of existing experimental arrangements allows for the measurement of large values of the light deflection angles as they may occur in heat and mass transfer situations. The method is demonstrated for the case of a helium jet exhausting into still air and the natural convective flow along a heated plate. The obtained data are compared with results measured with classical optical interferometers, and good agreement is found. The advantages of the new technique over the classical optical methods are briefly discussed.
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