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Proceedings of the 7th International Conference on HydroScience and Engineering (ICHE 2006) [ISBN: 0977447405] >
Numerical modeling of morphological development in tidal basins using unsteady criteria for the initiation of motion
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http://hdl.handle.net/1860/1446
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| Title: | Numerical modeling of morphological development in tidal basins using unsteady criteria for the initiation of motion |
| Authors: | Kolahdoozan, Morteza
Imanian, Hanifeh
Falconer, Roger A. |
| Keywords: | Coastal morphodynamics
Coastal sediment transport
Tidal currents
Coastal hydrodynamics
Fluvial hydraulics |
| Issue Date: | 13-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: | Details are given herein of the refinement and application of a two-dimensional depth integrated
numerical model to predict geo-morphological changes in tidal basins. An Alternating Direction
Implicit finite difference algorithm has been used for solving the governing differential equations,
which consist of the conservation of mass and momentum for the hydrodynamics, the transport
equation for suspended sediment fluxes and the sediment mass conservation equation for bed level
changes. The model includes several criteria for the initiation of motion (i.e. Shields (1936),
Kolahdoozan (1999) and Zanke (2003)). As the flow is highly turbulent, and its components have a
random nature, many researchers have tried to express the sediment transport processes by using
stochastic approaches. In the current study, both deterministic and stochastic methods were included
in the numerical model to show their accuracy and efficiency. To evaluate the numerical model
results laboratory measurements were used, obtained from an earlier experimental programme. In
these evaluations long term bed level changes in a laboratory model harbour were used for
verification of the model. Comparisons were made using different criteria for the initiation of
motion, with the results highlighting that the unsteadiness in the flow parameters included in the
numerical models had a major effect on the bed level changes in comparison with the turbulence
structure of the flow. |
| 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/1860/1446 |
| ISBN: | 0977447405 |
| Appears in Collections: | Proceedings of the 7th International Conference on HydroScience and Engineering (ICHE 2006) [ISBN: 0977447405]
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