Turbulence Modeling of Flood Plain Flows
Publication: Journal of Hydraulic Engineering
Volume 112, Issue 4
Abstract
A numerical model capable of predicting flow characteristics in a compound channel is described. The model solves the continuity and momentum equations along with the transport equations of kinetic energy of turbulence and the dissipation rate. Closure is achieved With the aid of algebraic relations for turbulence stresses. The model is capable of treating compound channels formed by regular geometrical sections of main channel and flood plain segments. The width of the main channel, the width of the total section, the depth of flow in flood plain, the total depth, channel slope and boundary roughness of main channel section and flood plain section can all be varied. The model predictions of total flow rate, shear stress distributions around the wetted perimeter, and the percentage of flow and shear force carried by the different sections were compared with published experimental data. Reasonable agreement between data and predictions was obtained.
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Information & Authors
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Published In
Journal of Hydraulic Engineering
Volume 112 • Issue 4 • April 1986
Pages: 251 - 266
Copyright
Copyright © 1986 ASCE.
History
Published online: Apr 1, 1986
Published in print: Apr 1986
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