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RESEARCH PAPERS

Flow Inside a Pneumatic Tire: A Peristaltic-Pumping Analysis for the Thin-Tire Limit at Very Low Forward Speed

[+] Author and Article Information
W. J. Rae

Aerodynamic Research Department, Calspan Corporation, Advanced Technology Center, P.O. Box 400, Buffalo, N.Y. 14225

J. Appl. Mech 50(2), 255-258 (Jun 01, 1983) (4 pages) doi:10.1115/1.3167028 History: Received July 01, 1981; Revised January 01, 1983; Online July 21, 2009

Abstract

The flow inside a pneumatic tire is analyzed in the limit where the cross-sectional diameter of the tire is small in comparison to the wheel diameter, and where the forward speed is sufficiently low that centrifugal pressure gradients can be neglected. The movement of the contact point around the circumference of the tire produces an internal flow by a mechanism analogous to peristaltic pumping in long flexible ducts. Analytic expressions for the flow velocities and pressures predicted by this model are derived, and are related to tire velocity and load.

Copyright © 1983 by ASME
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