Non-Newtonian Flow Patterns Associated With an Arterial Stenosis

[+] Author and Article Information
X. Y. Luo, Z. B. Kuang

Department of Engineering Mechanics, Xi’an Jiaotong University, Xian, Shaanxi 710049, People’s Republic of China

J Biomech Eng 114(4), 512-514 (Nov 01, 1992) (3 pages) doi:10.1115/1.2894103 History: Received September 10, 1990; Revised April 06, 1992; Online March 17, 2008


A non-Newtonian constitutive equation for blood has been introduced in this paper. Using this equation, blood flow attributes such as velocity profiles, flowrate, pressure gradient, and wall shear stress in both straight and stenotic (constricted) tubes have been examined. Results showed that compared with Newtonian flow at the same flowrate, the non-Newtonian normally features larger pressure gradient, higher wall shear stress, and different velocity profile, especially in stenotic tube. In addition, the non-Newtonian stenotic flow appears to be more stable than Newtonian flow.

Copyright © 1992 by The American Society of Mechanical Engineers
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