Flow Establishment in Elastic Pipes
Publication: Journal of Engineering Mechanics
Volume 128, Issue 11
Abstract
The paper addresses the problem of unsteady flow in an elastic pipe, starting from rest and tending towards a turbulent steady state. Careful experiments, involving uncommonly long, smooth-walled conduits, indicate that the hydraulic performance of an elastic pipe is controlled by its finite speed of response to a change in boundary conditions. The actually occurring, pulsatile flow is well described by a water-hammer analysis of the establishment process, but disagrees significantly with theoretical predictions based on assumed conduit rigidity. Flow accelerations, both temporal and convective, are shown to cause a significant increase in the values of the lower-critical Reynolds number of laminar-to-turbulent transition.
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References
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 128 • Issue 11 • November 2002
Pages: 1169 - 1173
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Nov 10, 2000
Accepted: Mar 29, 2002
Published online: Oct 15, 2002
Published in print: Nov 2002
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