Choking Phenomena in a Lung-Like Model

[+] Author and Article Information
David Elad, Roger D. Kamm, Ascher H. Shapiro

Fluid Mechanics Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139

J Biomech Eng 109(1), 1-9 (Feb 01, 1987) (9 pages) doi:10.1115/1.3138636 History: Received July 26, 1985; Revised November 07, 1986; Online June 12, 2009


A simple, continuous, one-dimensional model for the geometry and structure of the bronchial airways is used for the analysis of fluid flow patterns which have been observed in forced expiration maneuvers. Various phenomena within the conducting system associated with flow limitation are investigated: (a) the conditions in which a “choke” (flow limitation) can occur in a compliant system; (b) theoretical flows that are physically impossible; (c) the possibility of having elastic jumps downstream of the choke point; (d) perturbations in the physical parameters of the conducting system.

Copyright © 1987 by ASME
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