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|Title: ||A Quasi-3D Sediment Transport Modelling for Coastal Morphodynamics|
|Authors: ||Yun-Chih Chiang;Song-San Hsiao;Ming-Chung Lin|
|Keywords: ||Quasi-3D;Wave;Nearshore Current;Sediment Transport;Modelling|
|Issue Date: ||2013-02-01T07:20:39Z
|Publisher: ||Proceedings of the Twenty-first (2011) International Offshore and Polar Engineering Conference|
|Abstract: ||abstract:Accurate prediction of sediment transport rates is an important element in morphological studies for the coastal environment. The purpose of this paper is to develop a quasi-three-dimensional (Q-3D) total load sediment transport formula based on the bed load and suspended load transport driven by waves and wave induced nearshore currents for the coastal area. The model consists of a two-dimensional nonlinear wave model, a two-dimensional depth integrated model for wave-driven currents with a model for undertow circulation currents and a coastal sediment transport formula with bed load and suspended load. The bed load sediment transport rate are calculated by the flow velocity coupled with wave and wave driven current near bed, and the suspended load is integrated the sediment concentration calculated by coupled velocity in vertical direction. A comparison has been carried out between the computed sediment transport rates with experimental results. The numerical results obtained are reasonably accurate within a factor of 2.|
|Appears in Collections:||[河海工程學系] 演講及研討會|
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