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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
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| 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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