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TECHNICAL BRIEFS

Pressure Drops Through Arterial Stenosis Models in Steady Flow Condition

[+] Author and Article Information
S. Cavalcanti, P. Bolelli, E. Belardinelli

Department of Electronics, Computer Science and Systems, University of Bologna, Bologna, Italy

J Biomech Eng 114(3), 416-418 (Aug 01, 1992) (3 pages) doi:10.1115/1.2891404 History: Received June 01, 1991; Revised September 28, 1991; Online March 17, 2008

Abstract

Measures of pressure drops were made in two different plexiglass models of axial-symmetric arterial stenoses. The stenosis models had the same are reduction (86 percent) but were of different length so as to have a different tapering degree. Pressures were measured in steady flow condition at three equidistant points of the stenosis: upstream, in the middle, and downstream. Results indicate that: the upstream-middle pressure drop is independent of tapering degree but is highly influenced by area reduction; moreover it is much greater than the middle-downstream drop. The upstream-middle pressure drop can be accurately predicted by means of a relationship deduced by the momentum equation.

Copyright © 1992 by The American Society of Mechanical Engineers
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