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iDEA: Drexel E-repository and Archives > Drexel Academic Community > College of Engineering > Department of Civil, Architectural,and Environmental Engineering > Proceedings of the 7th International Conference on HydroScience and Engineering (ICHE 2006) [ISBN: 0977447405] > Numerical modeling of boundary shear stress distribution in compound channel flow

Please use this identifier to cite or link to this item: http://hdl.handle.net/1860/1486

Title: Numerical modeling of boundary shear stress distribution in compound channel flow
Authors: Jazizadeh, Farrokh
Zarrati, Amir Reza
Keywords: Computational hydraulics;Spillways;Hydraulic structures
Issue Date: 11-Sep-2006
Publisher: Michael Piasecki and College of Engineering, Drexel University
Citation: Proceedings of the Seventh International Conference on Hydroscience and Engineering, Philadelphia, PA, September 2006. http://hdl.handle.net/1860/732
Abstract: In compound channels, turbulence effects of bed friction and large shear layer at the interaction region between the slow moving flow in the flood plain and fast moving flow in the main channel results in a complex three dimensional flow structure. This structure implies the necessity of 3D numerical models. In the present investigation, shear stress distribution at boundaries of compound channels was calculated using a 3-D shallow water numerical model. To develop the model, a multilayer scheme was implemented. Since one of the important features of flow in such channels is the effect of turbulence on flow behavior, a Prandtle mixing length model, a Nezu-Rodi zero equation model, and a two-equation standard k −ε model were applied in the present research and their results were compared. To verify flow behavior for these turbulence models in different relative depths two sets of experimental data were utilized. Results showed that the model was able to show correctly the trend of shear stress distribution in such a complex flow especially at higher relative depths and could be used in practical engineering calculations. All three turbulence models showed similar results with slightly better results found from the k −ε model.
Description: Paper presented at The Seventh International Conference on HydroScience and Engineering (ICHE) hosted by the College of Engineering at Drexel Univeristy on September 10-13, 2006 in Philadelphia, Pennsylvania. The conference theme was IT in the Field of HydroSciences. It included several mini-symposia that emphasized IT topics in HydroSciences and the yearly meeting of the metadata group of the International Oceanographic Data and Information Exchange organization.
URI: http://hdl.handle.net/1860/1486
ISBN: 0977447405
Appears in Collections:Proceedings of the 7th International Conference on HydroScience and Engineering (ICHE 2006) [ISBN: 0977447405]

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