Deviations From the Cosine Law for Yawed Cylindrical Anemometer Sensors

[+] Author and Article Information
C. A. Friehe

Department of Chemical Engineering, Stanford University, Stanford, Calif.

W. H. Schwarz

Department of Mechanics, The Johns Hopkins University, Baltimore, Md.

J. Appl. Mech 35(4), 655-662 (Dec 01, 1968) (8 pages) doi:10.1115/1.3601288 History: Received March 19, 1968; Revised July 08, 1968; Online September 14, 2011


A new relation is presented to describe the deviations from the cosine law for cylindrical anemometer sensors inclined to the flow direction. The formula correlates the data for both hot-wire and hot-film sensors. One experimentally determined parameter, depending on the length-to-diameter ratio of the sensor, is used. The resulting corrections to the use of the cosine law for turbulent velocity correlations are also presented.

Copyright © 1968 by ASME
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