摘要
Longshorecurrentinstabilityisimportanttonearshorehydrodynamicandsedimenttransport.Thispaperinvestigatesthelongshorecurrentinstabilitygrowthmodelbasedexperimentaldatawithdifferentvelocityprofilesofslopes1:100and1:40byadoptingalinearshearinstabilitymodelwiththebottomfrictioneffects.Theresultsshowthat:(1)Onlybackshearmodeexistsintheinstabilityoflongshorecurrentforslope1:40andfrontshearandbackshearmodesmayexistslope1:100.(2)Thepeaksoflinearinstabilitygrowthmodeforslope1:100correspondtothreecases:thedominantpeakisformedbythejointactionofbothfrontshearandbackshear,orbybackshearalonewithouttheexistenceofthesmallerpeakorformedbyeitherthefrontshearorbackshear.(3)Bottomfrictioncandecreasethecorrespondingunstablegrowthratebutitcannotchangetheunstablefluctuationperiod.Theresultsoffluctuationperiod,wavelengthandspatialvariationobtainedbytheanalysisoflinearshearinstabilityareingoodagreementwithexperimentalresults.
出版日期
2018年06月16日（中国期刊网平台首次上网日期，不代表论文的发表时间）
