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RESEARCH PAPERS

Chaotic Oscillations in a Simple Collapsible-Tube Model

[+] Author and Article Information
O. E. Jensen

Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 9EW, UK

J Biomech Eng 114(1), 55-59 (Feb 01, 1992) (5 pages) doi:10.1115/1.2895450 History: Received August 06, 1991; Revised September 30, 1991; Online March 17, 2008

Abstract

A steady flow through a segment of externally pressurized, collapsible tube can become unstable to a wide variety of self-excited oscillations of the internal flow and tube walls. A simple, one-dimensional model of the conventional laboratory apparatus, which has been shown previously to predict steady flows and multiple modes of oscillation, is investigated numerically here. Large amplitude oscillations are shown to have a relaxation structure, and the nonlinear interaction between different modes is shown to give rise to quasiperiodic and apparently aperiodic behavior. These predictions are shown to compare favorably with experimental observations.

Copyright © 1992 by The American Society of Mechanical Engineers
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