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Longshore Currents of Random Waves on Different Plane Beaches
作者姓名:邹志利  王淑平  邱大洪  王艳  王风龙  董国海
作者单位:State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology Dalian 116024,China,Dalian 116024,China,Dalian 116024,China,Dalian 116024,China,Dalian 116024,China,Dalian 116024,China
基金项目:ThisstudywassupportedbytheNationalNaturalScienceFoundationofChina (GrantNo .5 9839330andNo .5 96790 0 5 )
摘    要:1 .IntroductionWhenwavespropagateobliquelytotheshorelineandbreak ,ameancurrentisgeneratedflowingparalleltothecoast.Thegenerationoflongshorecurrentscanbeexplainedasfollows .Withbreakingwaveheightdecreasing ,themomentumofwavemotionwillchangecorrespondingly .Accordingtothemomentumconservationtheory ,thechangesofthemomentumwillbeaccompaniedwithadditionalforcesactingonfluid .Longuet Higgins ( 1 970 )usedtheconceptofradiationstresstodescribetheaboveadditionalforceactingonfluidduetothechangeofwavemo…


Longshore Currents of Random Waves on Different Plane Beaches
ZOU Zhi-li ,WANG Shu-ping,QIU Da-hong WANG Yan,WANG Feng-long and DONG Guo-hai State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian ,China.Longshore Currents of Random Waves on Different Plane Beaches[J].China Ocean Engineering,2003,17(2).
Authors:ZOU Zhi-li  WANG Shu-ping  QIU Da-hong WANG Yan  WANG Feng-long and DONG Guo-hai State Key Laboratory of Coastal and Offshore Engineering  Dalian University of Technology  Dalian  China
Institution:ZOU Zhi-li 1,WANG Shu-ping,QIU Da-hong WANG Yan,WANG Feng-long and DONG Guo-hai State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China
Abstract:Model tests and numerical calculation of longshore currents and wave heights produced by irregular waves on two beaches with slopes of 1:100 and 1:40 are studied. The cross-shore distributions of longshore current velocities and wave heights are given and the influences of wave heights, wave periods, and beach slopes on longshore currents are discussed. The discussion is also made on the influences of different eddy viscosity coefficients on the numerical results of longshore current velocities.
Keywords:coast current  current  coasts  wave breaking
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