A Theoretical Investigation on the Structure of Fan Wakes

[+] Author and Article Information
R. Raj

Turbomachinery Laboratory, Department of Mechanical Engineering, The City College of The City University of New York, New York, N. Y.

J. L. Lumley

Mechanical and Aerospace Engineering, Cornell University, Ithaca, N. Y.

J. Fluids Eng 100(1), 113-119 (Mar 01, 1978) (7 pages) doi:10.1115/1.3448582 History: Received August 11, 1976; Online October 12, 2010


An analytical study is presented of the mean and turbulent characteristics of axial turbulent wakes behind a rotating fan. Simplified solutions are presented governing the mean radial and axial velocity profiles and their decay rate. An estimate is made of the relative order of magnitude of various turbulence quantities. The effect of rotation on the turbulence structure is described. Sufficient physical interpretations and explanations are presented for insight into and formulation of the problem.

Copyright © 1978 by ASME
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