On the Flow of a Non-Newtonian Liquid Induced by Intestine-Like Contractions

[+] Author and Article Information
N. Phan-Thien

Department of Mechanical Engineering, The University of Sydney, N.S.W. 2006, Australia

H. T. Low

Department of Mechanical and Production Engineering, The National University of Singapore, Kent Ridge, Singapore 0511

J Biomech Eng 111(1), 1-8 (Feb 01, 1989) (8 pages) doi:10.1115/1.3168334 History: Received April 02, 1988; Revised October 24, 1988; Online June 12, 2009


This paper considers the flow of an inelastic liquid which is generated by contractions like those of the intestine. Unlike regular peristaltic motion, these contractions occur locally over a finite length and have a finite amplitude. We adopt a contraction model due to Macagno and Christensen and repeat their analysis for an inelastic liquid. Our analysis, which is based on a Boundary Element Method, indicates that the net flow rate depends very weakly on the power-law index. The pumping action is therefore similar to that of a positive displacement pump.

Copyright © 1989 by ASME
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