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RESEARCH PAPERS

The Effect of Compliance on Wall Shear in Casts of a Human Aortic Bifurcation

[+] Author and Article Information
D. D. Duncan, C. B. Bargeron, S. E. Borchardt, O. J. Deters, S. A. Gearhart, F. F. Mark

The Johns Hopkins University, Applied Physics Laboratory, Laurel, Md. 20707-6099

M. H. Friedman

The Ohio State University, Biomedical Engineering Center, Columbus, Ohio 43210-1240

J Biomech Eng 112(2), 183-188 (May 01, 1990) (6 pages) doi:10.1115/1.2891170 History: Received March 03, 1989; Revised February 01, 1990; Online March 17, 2008

Abstract

Rigid and compliant casts of a human aortic bifurcation were subjected to physiologically realistic pulsatile fluid flows. At a number of sites near the wall in the approximate median plane of the bifurcation of these models, fluid velocity was measured with a laser Doppler velocimeter, and wall motion (in the case of the compliant cast) was determined with a Reticon linescan camera. The velocity and wall motion data were combined to estimate the instantaneous shear rates at the cast wall. Analysis showed that at the outer walls the cast compliance reduced shear rates, while at the walls of the flow divider the shear rate was increased.

Copyright © 1990 by The American Society of Mechanical Engineers
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