Entry Flow in a Circular Tube of Aortic Arch Dimensions

[+] Author and Article Information
K. O. Lim, J. S. Kennedy, C. M. Rodkiewicz

Department of Mechanical Engineering, The University of Alberta, Edmonton, Alberta, Canada

J Biomech Eng 106(4), 351-356 (Nov 01, 1984) (6 pages) doi:10.1115/1.3138504 History: Received December 22, 1982; Revised May 23, 1984; Online June 15, 2009


Steady flow within a uniform circular curved tube formed by two 90-deg elbows was studied as a function of ψ, the angle between the planes of curvature of the two elbows. Boundary layer separation was found at two locations. The sites of these separation zones were observed to be essentially independent of ψ while the Reynolds number at which separation was first detected was found to decrease as ψ increased. The relation between separation and the pathogenesis of atherosclerosis is discussed. Secondary flow pattern was found to depend on ψ and in some instances on Reynolds number as well.

Copyright © 1984 by ASME
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