Peristaltic Pumping in a Circular Tube in the Presence of an Eccentric Catheter

[+] Author and Article Information
Ramachandra Rao Adabala, Usha Srinivasan

Indian Institute of Science, Bangalore-560012, India

J Biomech Eng 117(4), 448-454 (Nov 01, 1995) (7 pages) doi:10.1115/1.2794206 History: Received September 21, 1993; Revised November 04, 1994; Online October 30, 2007


The influence of an eccentrically inserted catheter on the peristaltic pumping in a tube is investigated under long wavelength, low Reynolds number assumptions. The radially asymmetric deformation of the wall arising through an eccentrically inserted catheter is taken into consideration by choosing an appropriate bipolar coordinate system. The effect of the position and size of the catheter on pumping characteristics is studied. The best performance of pumping is noticed at a certain position of the catheter. The size of the catheter, when placed eccentrically, alters the pressure signature significantly inside the bolus, unlike the concentric case discussed by Lykoudis and Roos (1971). Further, the maximum pressure rise in one period of the peristaltic wave is observed to decrease with an increase in the eccentricity.

Copyright © 1995 by The American Society of Mechanical Engineers
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