| Summary: | 碩士 === 國立交通大學 === 土木工程學系 === 101 === In respect of sediment issue in reservoirs, the transport of sediment mainly involves with coarse particles in upstream that forms delta and fine articles in reservoirs that result in transport of density current. From numerical modeling view point, the accuracy of simulated results of sediment transport is often influenced by the bed-load boundary condition in upstream and resuspension mechanism of the riverbed boundary. This research adopts Hsieh’s (2003) two-dimensional (RESED2D) and Zhong’s (2012) three-dimensional (RESED3D) mobile-bed models to discuss the effect of upstream and riverbed boundary conditions on sediment transport.
To examine the effect of boundary conditions of sediment transport modeling for reservoirs, this study first simulated experimental and on-site case with 2D model for discussion of inflow boundary condition’s effect on the change of riverbed. Then, the experimental cases were simulated with use of 3D model for discussion of the effect of riverbed boundary on delivery of concentration. Finally, with a hypothetical inflow concentration profile, the 3D model was applied to the Shi-men Reservoir to show its applicability.
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