Three-Dimensional Numerical Simulation of Compound Channel Flows
Publication: Journal of Hydraulic Engineering
Volume 129, Issue 8
Abstract
A three-dimensional numerical study is presented for the calculation of turbulent flow in compound channels. The flow simulations are performed by solving the three-dimensional Reynolds-averaged continuity and Navier–Stokes equations with the turbulence model for steady-state flow. The flow equations are solved numerically with a general-purpose finite-volume code. The results are compared with the experimental data obtained from the UK Flood Channel Facility. The simulated distributions of primary velocity, bed shear stress, turbulent kinetic energy, and Reynolds stresses are used to investigate the accuracy of the model prediction. The results show that, using an estimated roughness height, the primary velocity distributions and the bed shear stress are predicted reasonably well for inbank flows in channels of high aspect ratio and for high overbank flows with values of the relative flow depth greater than 0.25.
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Published In
Journal of Hydraulic Engineering
Volume 129 • Issue 8 • August 2003
Pages: 645 - 652
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Jan 9, 2002
Accepted: Mar 10, 2003
Published online: Jul 15, 2003
Published in print: Aug 2003
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