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RESEARCH PAPERS

Velocity Measurements in Two Natural Convection Air Flows Using a Laser Velocimeter

[+] Author and Article Information
R. D. Flack

Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, Va.

C. L. Witt

Hayes, Seay, Mattern and Mattern, Roanoke, Va.

J. Heat Transfer 101(2), 256-260 (May 01, 1979) (5 pages) doi:10.1115/1.3450956 History: Received June 12, 1978; Online August 11, 2010

Abstract

Velocities in two laminar free convection air flow fields were measured using a laser velocimeter. Velocities were first measured in the boundary layer around a heated vertical flat plate and results compare within two percent of theoretical and previous experimental (streak photography) data. Second, velocities were measured throughout a two-dimensional triangular enclosure, which consisted of two isothermal side walls (one heated and one cooled), an insulated bottom, and glass end plates. Enclosure data are compared to simple inclined isothermal plate data and are also presented so that the flow patterns can be observed.

Copyright © 1979 by ASME
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