简介：Theproblemsofasolitarywavepassingoverrectangularcylindershavebeenanalysed.Thenumericalsimulationisbasedonthefullnonlineartwo-dimensionalNavier-Stokesequationswhicharesolvedbythefinitedifferencemethod.ThefreesurfaceisdealtwithbytheVolumeofFluidmethod(VOF).ResultsforasolitarywavepassingoverasinglecylinderarecomparedwiththeexperimentaldataofSeabra-Santos,PenouardandTempervilleandbetteragreementisobtainedthanthoseobtainedfromthelongwaveequationbasedonthepotentialflowtheory.Resultsarealsogivenfortwocylinderswithdifferentgaps.

简介：Thispaperinvestigatestheeffectsofstructureparametersondynamicresponsesofsubmergedfloatingtunnel(SFT)underhydrodynamicloads.Thestructureparametersincludesbuoyancy-weightratio(BWR),stiffnesscoefficientsofthecablesystems,tunnelnetbuoyancyandtunnellength.First,theimportanceofstructuraldampinrelationtothedynamicresponsesofSFTisdemonstratedandthemechanismofstructuraldampeffectisdiscussed.Thereafter,thefundamentalstructureparametersareinvestigatedthroughtheanalysisofSFTdynamicresponsesunderhydrodynamicloads.TheresultsindicatethattheBWRofSFTisakeystructureparameter.WhenBWRis1.2,thereisaremarkabletrendchangeintheverticaldynamicresponseofSFTunderhydrodynamicloads.TheresultsalsoindicatethattheratioofthetunnelnetbuoyancytothecablestiffnesscoefficientisnotacharacteristicfactoraffectingthedynamicresponsesofSFTunderhydrodynamicloads.