简介：在这篇论文，在在低严肃下面的一辆矩形的坦克的液体sloshing的动力学被调查。基本频率和液体的sloshing的速度潜力被Fourier系列的扩大获得。力量的特征和液体作用于的时刻一辆矩形的坦克被分析。液体的sloshing的相等的机械模型ofspring-vibrator-damper与机械相等的原则被建立，数字结果被给。数字结果证明相等的sloshing团随严肃的增加增加，并且基本频率和相等的sloshing团随液体深度的增加增加。

简介：Anewmethodforsloshingsimulationinaswaytankispresent,inwhichthetwophaseinterfaceistreatedasaphysicaldiscontinuity,whichcanbecapturedbyawell-designedhighorderscheme.BasedonNormalizedVariableDiagram(NVD),ahighorderdiscretizationschemewithunstructuredgridsisrealized,togetherwithanumericalmethodforfreesurfaceflowwithafixedgrid.Thismethodisimplementedinanin-housecodeGeneralTransportEquationAnalyzer(GTEA)whichisanunstructuredgridsfinitevolumesolver.Thepresentmethodisfirstvalidatedbyavailableanalyticalsolutions.Asimulationfora2-Drectangulartankatdifferentexcitationfrequenciesoftheswayiscarriedout.AcomparisonwithexperimentaldatainliteratureandresultsobtainedbycommercialsoftwareCFXshowsthatthesloshingloadonthemonitorpointsagreeswellwiththeexperimentaldata,withthesamegrids,andthepresentmethodgivesbetterresultsonthesecondarypeak.Itisshownthatthepresentmethodcansimulatethefreesurfaceoverturningandbreakupphenomena.

简介：Theinfluenceofbafflepositiononliquidsloshingduringthebrakingandturningofatanktruckwasstudiedusingavolumeoffluid(VOF)model.Theforces,theirpositionsandweightdistributionduringbrakingandtheforcesandrollingmomentduringturningwerecalculated.Thereliabilityofthecalculationmethodwasvalidatedbycomparisonswithexperimentalresults.Theresultsshowedthatduringbraking,liquidsplashesinthetankandthemaximumforcesandG(theratioofweightactingonthefrontaxletotherearaxle)arelargewhenA(theratioofthearchareaabovethebaffletotheareaofcrosssection)≤0.1.WhenA≥0.2,asthepositionofthebaffleislowered,themaximumofFx(theforceindirectionx)firstdecreasesthenincreases,andthemaximumofFy(theforceindirectiony)andGincrease.Duringturning,liquidsplashesinthetankandthemaximumforcesandM(therollingmoment)arelargewhenD(theratioofthearchareaabovethebaffletotheareaofcrosssection)≤0.2.WhenD≥0.3,asthepositionofthebaffleislowered,themaximumsofFy,Fz(theforceindirectionz)andMincrease.

简介：Asloshingmitigationconcepttakingadvantageoffloatinglayersofsolidfoamelementsisproposedinthepresentstudy.Physicalexperimentsarecarriedoutinaliquidtanktoinvestigatethehydrodynamicmechanismofthisconcept.Effectsofthefoam-layerthickness,excitationamplitude,andexcitationfrequencyonthesloshingpropertiesareanalyzedindetail.Itisfoundthatthefloatinglayersofsolidfoamelementsdonotevidentlyaffectthefundamentalnaturalsloshingfrequencyoftheliquidtankevidentlyamongtheconsideredcases.Attheresonantcondition,themaximumwaveheightanddynamicpressurearegreatlyreducedasthefoam-layerthicknessincreases.Higher-orderpressurecomponentsonthetanksidegraduallyvanishwiththeincreaseofthefoam-layerthickness.Caseswithdifferentexcitationamplitudesarealsoanalyzed.Thephenomenonisobservedwhenthewavebreakinginthetankcanbesuppressedbysolidfoamelements.

简介：Thedynamicsofliquidsloshinginasphericaltankwithspacerunderlowgravitywasinvestigated.Byextendingthecharacteristicfunctions,thefrequenciesofliquidfree-sloshing,reactionforceandmomentsonthewalloftankwereobtained.Bymechanicalequivalentprinciple,theequivalentmodelsofspring-vibrator-damperofliquidsloshingweregiven.Thenumericalresultsobtainedshowwhenaspacerisinsertedinthetank,thesloshingfrequencyofliquidandthesloshingmassofliquidwilldecrease.

简介：在坦克的大振幅sloshing被最少的方形的粒子模仿在这篇论文的有限元素方法(LSPFEM)。最少的方形的有限元素方法(LSFEM)被采用，并且由于方程为速度和压力的相等顺序的插值调节，，的不可压缩性避免稳定问题空间地分离Navier司烧通常在Galerkin方法使用满足著名LBB条件。LSPFEM也使用Lagrangian描述为节点(粒子)的运动建模。连接这些节点的一个网孔被一个三角测量算法构造避免网孔失真。一个伪α-shapes算法被用来识别免费表面边界。节点被看作罐头自由地移动并且甚至与主要液体领域分开的粒子。最后，这个方法被用来在二辆维的坦克学习大振幅sloshing进化。结果与Flow-3d与好同意获得的那些相比。

简介：Smoothedparticlehydrodynamics(SPH)isamesh-freeadaptiveLagrangianparticlemethodwithattractivefeaturesfordealingwiththefreesurfaceflow.ThispaperappliestheSPHmethodtosimulatethelarge-amplitudelateralsloshingbothwithandwithoutafloatingbody,andtheverticalparametrically-excitedsloshinginatwo-dimensionaltank.ThenumericalresultsshowthattheSPHapproachhasanobviousadvantageoverconventionalmesh-basedmethodsinhandlingnonlinearsloshingproblemssuchasviolentfluid-solidinteraction,andflowseparationandwave-breakingonthefreefluidsurface.TheSPHmethodprovidesanewalternativeandaneffectivewaytosolvethesespecialstrongnonlinearsloshingproblems.

简介：Thedynamiccharacteristicsofliquidsloshinginatransverselyvibratingsphericaltankwithspacerunderlowgravitywereinvestigated.Byexpandingthecharacteristicfunctions,thefrequenciesandvelocitypotentialsofliquidfree-sloshingwereobtained.Thedynamicequationsandboundaryconditionsofliquidsloshinginthetraversevibrationalsphericaltankwithspacerunderlowgravitywerederived.Bymodifyingthevelocitypotentialsofliquidfree-sloshing,thevelocitypotentialsofliquidsloshinginthetraversevibratingsphericaltankwithaspacerwereobtained.Furthermore,theforcesandthemomentsactingontankwallweregiven.Thenumericalresultsshowwhenaspacerisinsertedinthetank,thesloshingfrequenciesofliquidandtheforcesactingontankwallwilldecrease,butthemomentofforcetothecentreofthetankwhichiscausedbytheforceofliquidactingonthespacerwilloccur.

简介：Thesimulationsofnonlinearsloshinginbothtwo-dimensionalandthree-dimensionalliquidtankswithporositygirderarecarriedoutintimedomainbyusingtheMulti-domainBoundaryElementMethod(MBEM).Thecomparisonofthepresentresultsandthereferencesisconductedandshowstheyagreewellwitheachother.Thethree-dimensionaleffectandtheinfluenceofthewidthofliquidtankandtheheightandporosityofthegirderonthenaturalperiodofthemodelarealsodiscussed.

简介：ThenumericalsolutionsofstandingwavesforEulerequationswiththenonlinearfreesurfaceboundaryconditioninatwo-dimensional(2D)tankarestudied.Theirregulartankismappedontoafixedsquaredomainthroughpropermappingfunctions.Astaggeredmeshsystemisemployedina2Dtanktocalculatetheelevationofthetransientfluid.Atime-independentfinitedifferencemethod,whichisdevelopedbyBang-fuhChen,isusedtosolvetheEulerequationsforincompressibleandinviscidfluids.Thenumericalresultsagreewellwiththeanalyticsolutionsandpreviouslypublishedresults.Thesloshingprofilesofsurgeandheavemotionwithinitialstandingwavesarepresented.Theresultsshowveryclearnonlinearandbeatingphenomena.

简介：Undertheconditionoflowgravitythecharacteristicsofliquidforcedsloshinginaturningsphericaltankwithaspacerwereinvestigated.Thestaticshapeoftheliquidsurfacewasanalyzed.Byexpandingthecharacteristicfunctions,thefrequenciesandvelocitypotentialofliquidfree-sloshingwerederived.Thegoverningequationsandboundaryconditionsfortheforcedsloshingofliquidunderthetankturningwereestablished.Thetransverseforceofliquidactingonthetankandthemomentofforcetothecentreofthetankwhichiscausedbytheforceofliquidactingonthespacerweregiven.Numericalresultswerecomparedwiththeonesofthesphericaltankwithoutaspacer.Theresultsshowthatwhenaspacerisinsertedinthetank,thesloshingfrequencyofliquidandthetransverseforceofliquidactingonthetankwilldecrease,butthemomentofforcetothecentreofthetankwhichiscausedbytheforceofliquidactingonthespacerwilloccur.

简介：Aboundaryelementmethodispresentedforthecoupledmotionanalysisofstructuralvibrationwithsmall-amplitudefluidsloshingintwo-dimensionalspace.ThelinearizedNavier-Stokesequationsareconsideredinfrequencydomainandtransformedintoboundaryintegralequations.AnappropriatefundamentalsolutionfortheHelmholtzequationwithpureimaginaryconstantisfound.Theconditionofzero-stressisimposedonthefreesurface,andnon-slipconditionoffluidparticlesisimposedonthewallsofthecontainer.Forrigidmotionmodels,theexpressionsforaddedmassandaddeddampingtothestructuralmotionequationsareobtained.Sometypicalnumericalexamplesarepresented.