Determination of Boundary Shear Stress and Reynolds Shear Stress in Smooth Rectangular Channel Flows
Publication: Journal of Hydraulic Engineering
Volume 130, Issue 5
Abstract
A method for computing three-dimensional Reynolds shear stresses and boundary shear stress distribution in smooth rectangular channels is developed by applying an order of magnitude analysis to integrate the Reynolds equations. A simplified relationship between the lateral and vertical terms is hypothesized for which the Reynolds equations become solvable. This relationship has the form of a power law with an exponent of 2, or infinity. The semiempirical equations for the boundary shear distribution and the distribution of Reynolds shear stresses are compared with measured data in open channels. The power-law exponent of 2 gave the best overall results while n=infinity gave good results near the boundary.
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Information
Published In
Journal of Hydraulic Engineering
Volume 130 • Issue 5 • May 2004
Pages: 458 - 462
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: May 20, 2002
Accepted: Oct 30, 2003
Published online: Apr 15, 2004
Published in print: May 2004
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