风暴作用下的近岸悬浮泥沙数值模拟

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1、中国海洋大学硕士学位论文风暴作用下的近岸悬浮泥沙数值模拟姓名：林俊申请学位级别：硕士专业：物理海洋指导教师：韩树宗20070601垦墨堡旦!竺生曼墨堡堡鲨墼堕塑塑NumericalSimulationsofThreeDimensionalSuspendedSedimentTransportwiththeeffectofStormAbstractTheestuaryandcoastalare_一RswithrichreSOUrCeSandconvenienttrufflearc删yrelatedwithhuman’Sec

2、onomy,lifeandSOon，andit’Sthemainplacepeoplelive。product，tradeandtravel．Otherwise，theestuaryandcoastalarea,slocateinconnectionregionoflandandseawherethedynamicconditionsarechangeable，SOthattheeffectpeoplemakeuseoftheseaKeasdependsonthethoroughknowledgeofvariousma

3、rinedynamicelementsandthematerialmovementrulesunderthesedynamicconditions’contr01．Amongthesemovementsoneofgreatimportanceissedimentmovementwhichcausesphenomena鼬evolvementofbeach．siltingofharborandsea．route，Whereasthestormisconsideredtheimportantfactorthataffects

4、thesedimcntmovementandshapesthelandformofSeacoastandseabed,thestormwavetogetherwithstormtideandastronomytidecaneasilycausethecorrosionofbeach,agitatebottomsediment，fiercelychangethelandformofseacoastandseabedindisasterarea,andevenaffectthesecurityofcoastalengine

5、eringandshipping．Inthisdissertation，a3DsuspendedsedimentmodelcalledCOHERENS-SEDwasfirstUSedjnoffshoreareaofJiaonantosetu口thesedimemmovementmedclundertheconditionofcommonWaveandsimpletidalcurrent．Onthebaseofcomparingandcheckinguptheresultsofsimulationwiththein-si

6、tudata,the3DsuspendedsedimentmodelWaScombinedwiththestormhydrodynamicmodeltosimulatethesedimentmovementintheNo．9711tropicss“)rm，thentheresultWAScomparedwiththearea’shydrodynamicandsedimentmovementundertheconditionofcellliT／Onwaveandsimpletidaletwrent,whichfarthe

7、ranalyzedthepartialmechanismthatstomainfluencesthesedimentmovementinshere．TheresultsindicatethatCOHERENS·SEDisapplicableinthe3DsimulationofJiannanoffshorearea’scurrentfieldandsediment．Throughthecompareandanalysis，Ⅱ风暴作用下的近岸悬浮泥沙数值模拟itisknownthatthestormhasenhanced

8、mebottom$ffcss．changedthecuffentfield,andhasstronglyinfluencedthesediment’sincreasingandbeachlandform’schange．Keyword：storm，auspendedsediment,COHRERNS-SED，numericalsi