预览加载中，请您耐心等待几秒...

格子Boltzmann方法气泡泵提升管内气泡运动行为研究.docx

预览
1/3
2/3
3/3

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

格子Boltzmann方法气泡泵提升管内气泡运动行为研究 Title:StudyofBubbleMotioninsideanUpwardFlowBubblePumpusingLatticeBoltzmannMethod Abstract: Themotionofbubblesplaysacrucialroleinvariousindustrialapplications,includingbubblepumps.Understandingthebehaviorofbubblesinsidethepumpisessentialforefficientdesignandoperation.Inthisstudy,thelatticeBoltzmannmethod(LBM)wasemployedtoinvestigatethebubblemotioninsideanupwardflowbubblepump.TheLBMprovidedapowerfulnumericaltooltosimulatethecomplexgas-liquidinteractionsandcapturethedynamicsofbubblesaccurately.Thesimulationresultsrevealedtheinfluenceofvariousparametersonthebubblemotion,enhancingourunderstandingofbubblebehaviorwithinthepump. Keywords:bubblepump,latticeBoltzmannmethod,gas-liquidinteractions,upwardflow,numericalsimulation 1.Introduction Bubblepumpshavegainedsignificantattentioninrecentyearsduetotheirefficientpumpingcapabilitiesandminimalenergyrequirements.Bubblepumpsutilizebubblesgeneratedatthebottomtotransportliquidsupwards.Understandingthemotionandbehaviorofbubblesinsidethepumpiscrucialforoptimizingthepump'sperformance.Whileexperimentalstudieshavecontributedvaluableinsightsintobubblemotion,theyareoftenlimitedbythedifficultiesassociatedwithdirectobservationandmeasurement.Therefore,numericalsimulationsbasedoncomputationalfluiddynamics(CFD)techniquesofferavaluablealternativeforstudyingbubbledynamicsinpumps.Amongthesetechniques,thelatticeBoltzmannmethod(LBM)hasemergedasarobustapproachformodelinggas-liquidinteractionswithahigherlevelofaccuracyandefficiency. 2.LatticeBoltzmannMethod(LBM) TheLBMisamesoscopicsimulationmethodthatemploysadiscretevelocitymodeltoapproximatethemacroscopicfluidproperties.Itiswidelyusedforsimulatingmultiphaseflows,owingtoitscapabilitytohandlecomplexfluidinterfacesandaccuratelydescribeinterfacialdynamics.TheLBMdividesthefluiddomainintoaregularlatticegrid,witheachlatticepointrepresentingafluidparticle.Throughtheevolutionofparticledistributionfunctions,theLBMsolvestheNavier-Stokesequationsforfluidflow.Byincorporatingadditiona