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RESEARCH PAPERS

Comparison of Steady and Pulsatile Flow Near the Ventral and Dorsal Walls of Casts of Human Aortic Bifurcations

[+] Author and Article Information
O. J. Deters, F. F. Mark, C. B. Bargeron, M. H. Friedman

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

G. M. Hutchins

Department of Pathology, The Johns Hopkins Medical Institutions, Baltimore, Md. 21205

J Biomech Eng 106(1), 79-82 (Feb 01, 1984) (4 pages) doi:10.1115/1.3138461 History: Received April 01, 1983; Revised October 21, 1983; Online June 15, 2009

Abstract

Steady and pulsatile flows were passed through casts of human aortic bifurcations and, by means of a laser Doppler anemometer, fluid velocities were measured at selected sites near the ventral and dorsal walls. At these sites, in the vicinity of the bifurcation, the influence of secondary flow is significant and therefore an appreciation of the phasic variation of secondary flow patterns is important. Results are presented comparing the flow direction in both steady and pulsatile flow at sites in three casts. The common features of the flow at these sites were the persistence of the flow direction during the accelerating and decelerating phases of the pulsatile cycle, and the consistently smaller angle (measured from the inlet centerline) of the pulsatile flow direction as compared to the angle of the flow direction in steady flow.

Copyright © 1984 by ASME
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