Experimental and Numerical Study of Wave-Induced Long-Shore Currents on A Mild Slope Beach  

作　　者：孙涛 陶建华 

机构地区：[1]School of Environment, Beijing Normal University, Beijing 100875, China [2]Department of Mechanics, Tianjin University, Tianjin 300072, China

出　　处：《China Ocean Engineering》2005年第3期469-484,共16页中国海洋工程（英文版）

基　　金：ThisworkissupportedbytheKeyProgramofNationalNaturalScienceFoundationofChina(NSFC)(GrandNo59839330)andNationalNaturalScienceFoundationofChina(GrandNo.19772031)

摘　　要：The long-shore current distribution on a mild slope beach is studied by combining the numerical model and the physical experiment. The experiments of long-shore currents under the action of regular and irregular waves are conducted on mild beaches with different slopes in a wave basin. A numerical model is established, which includes a wave propagation model, a wave breaking model and a long-shore current model. The validity of the numerical model is proved by the comparison of its results with the results of the experimental model. It is concluded that the wave-ioduced long-shore current is influenced significantly by the incident wave height, the wave angle and the beach slope. Its application to the Bohai Bay indicates that the wave-induced currents have the same order of magnitude as the tide currents in the near-shore zone of mill slope beach. In the design of wastewater ouffall locations on a mild-slope beach with shallow water of the Bohai Bay, the position of the outfall should be 10 km away from the shoreline, which is outside of the surf-zone.The long-shore current distribution on a mild slope beach is studied by combining the numerical model and the physical experiment. The experiments of long-shore currents under the action of regular and irregular waves are conducted on mild beaches with different slopes in a wave basin. A numerical model is established, which includes a wave propagation model, a wave breaking model and a long-shore current model. The validity of the numerical model is proved by the comparison of its results with the results of the experimental model. It is concluded that the wave-ioduced long-shore current is influenced significantly by the incident wave height, the wave angle and the beach slope. Its application to the Bohai Bay indicates that the wave-induced currents have the same order of magnitude as the tide currents in the near-shore zone of mill slope beach. In the design of wastewater ouffall locations on a mild-slope beach with shallow water of the Bohai Bay, the position of the outfall should be 10 km away from the shoreline, which is outside of the surf-zone.

关 键 词：wave-induced long-shore current experimental study mathematical model regular and irregular waves 

分 类 号：P731.22[天文地球—海洋科学] P737.1