Numerical Study on the Flow of a Non-Newtonian Fluid Through an Axisymmetric Stenosis

[+] Author and Article Information
Masahide Nakamura, Tadashi Sawada

Akita University, Akita, Japan

J Biomech Eng 110(2), 137-143 (May 01, 1988) (7 pages) doi:10.1115/1.3108418 History: Received July 01, 1987; Revised February 27, 1988; Online June 12, 2009


The laminar steady flow of non-Newtonian fluid (biviscosity fluid) through an axisymmetric stenosis is calculated using the finite element methods. The flow pattern, the separation and reattachment points, and the distributions of pressure and shear stress at the wall are obtained. Then, the axial force acting on the stenosis is evaluated. It is suggested by the authors that this force can become one of the causes of post-stenotic dilatation. Calculated results show that the non-Newtonian property of blood weakens the distortion of flow pattern, pressure and shear stress at the wall associated with the stenosis and that the non-Newtonian property of blood decreases the axial force acting on the stenosis.

Copyright © 1988 by ASME
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