Longshore Currents over Barred Beach with Mild Slope  

作　　者：王彦 邹志利 

机构地区：[1]State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology

出　　处：《China Ocean Engineering》2016年第2期193-204,共12页中国海洋工程（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Grant Nos.50479053 and 11272078);the Funds for Creative Research Groups of China(Grant No.51221961)

摘　　要：The laboratory experiment and numerical simulations of wave-driven longshore currents by random waves on barred beaches with slopes of 1：100 and 1：40 were conducted to investigate the bimodal feature of mean longshore currents,with emphasis on the location and ratio of two peaks of longshore currents.The location and ratio of two peaks are controlled by the sand bar.The influences of wave heights and beach slopes on the longshore currents are discussed.Numerical simulations were also performed to compute the measured velocity profile,with the emphasis on the effect of lateral mixing,bottom friction and surface rollers on numerical results.The laboratory experiment and numerical simulations of wave-driven longshore currents by random waves on barred beaches with slopes of 1：100 and 1：40 were conducted to investigate the bimodal feature of mean longshore currents,with emphasis on the location and ratio of two peaks of longshore currents.The location and ratio of two peaks are controlled by the sand bar.The influences of wave heights and beach slopes on the longshore currents are discussed.Numerical simulations were also performed to compute the measured velocity profile,with the emphasis on the effect of lateral mixing,bottom friction and surface rollers on numerical results.

关 键 词：barred beach bimodal feature second peak MODELING 

分 类 号：P731.21[天文地球—海洋科学] P737.1