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RESEARCH PAPERS

Thin-Shear-Layer Model in Supercritical Hydraulic Flow

[+] Author and Article Information
H. I. Andersson, T. Ytrehus

Institutt for Mekanikk, Norwegian Institute of Technology, 7034 Trondheim-NTH, Norway

J. Appl. Mech 51(2), 232-238 (Jun 01, 1984) (7 pages) doi:10.1115/1.3167605 History: Received March 01, 1983; Revised October 01, 1983; Online July 21, 2009

Abstract

A supercritical, free-surface flow on an adverse incline has been modeled as a “thin-shear-layer” with algebraic eddy-viscosity included to account for turbulent shear stresses. The model has been solved numerically by a finite-difference technique for parabolic systems. Turbulent-viscous and adverse gravity effects are found to interact via the free-surface behavior in a way that leads to breakdown of the steady two-dimensional flow. Computed breakdown positions, velocity, and flow depth developments are compared with experimental and semi-empirical hydraulic results.

Copyright © 1984 by ASME
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