简介：一个分析方法被建议在二层的液体由装底部的圆形的柱体分析放射和衍射ofwater波浪。分析表情foradded质量和抑制系数，以及圆形的cylinderwere的波浪刺激力量由一个特徵函数扩大方法获得了。在二层的液体的bottom-mountedcircular柱体上的水动力学力量包括不仅增加的团和抑制系数，butalso表面的波浪力量和内部波浪的模式。这与ahomogenous液体的盒子不同。一些例子被给，证明密度层化能有在大量频率上的这些水动力学力量上的relativelarge效果。

简介：Inthisarticle,basedonriverqualitysimulationandsystemoptimization,awaterqualitymodelwasestablishedforscenicriverafterrainfalldischargeinfloodseason,withthetargetofmakingwaterpollutantsmeetthestandardinpriorityandsavingexpenditureonpollutioncontrol.Withtheprincipleofreducingsewagefromcombinedsewagepumpingstationandheavilypollutedinitialrainwater,amathematicalmultiobjectiveplanningmodelwasconstructedforrainsewagepollutioncontrolinfloodseason,andonescenicriverinanortherncitywastakenforsimulationexample.Theresultsshowthat:theoptimizationresultmeetstherequirementsofplanning,amongwhich,sewagereductionfromthecombinedpumpingstationaccountsfor17.38%inthetotalreductionofrainsewage,andthereductionintheheavilypollutedrainwateraccountsfor77.24%inthetotalreductionofrainwaterpumpingstation.Theplanningschemecanprovidetheoreticalbasisforpollutioncontrolofscenicriverinfloodseason,andforrationalreconstructionandlayoutofoutfallsalongtwobanksoftheriver.

简介：Thewaterintakeheadinstalledwithinclinedboardingsiscalledlaminatesedimentprecipitation,whichseparatesliquidandsolidparticlesintwo-phaseflowbygravity.ThepaperpresentstheequationsforcalculatingthedistanceHbetweentwoincllinedboardings,indicatingthatHhasakeyeffectontheparticleprecipitationvelocityV2.Thepaperfocusesalsoonthecal-culationofhydraulicsimilarityofmodelwiththetheoreticmodel.

简介：AGalerkinfiniteelementformulationisdevelopedforthenumericalsimulationofwaterflowinvariablysat-uratedporousmedia,Picardalgorithmisusedtodealwithseverelynonlinearfieldproblems.Thealgorithmisfor-mulatedforarbitraryquadrilateralelementswhichcanaccommodatecomplexgeometry.Anew"influencecoeffi-cient"techniqueisdevelopedwhichcanbeusedtocomputeelementmatricesinasimpleandefficientmanner.Thistechniqueavoidsnumericalintegrationandleadstoasubstantialsavingofcost.Twoexamplesarepresentedtoverifytheproposedmethod.

简介：ExperimentalStudyonoil-watertwo-phaseflowpatternsandpressurelosswasconductedonahorizontalsteelpipeloopwith26.1mminnerdiameterand30mtotallength.Theworkingfluidsarewhiteoil,dieseloilandtapwater.Severalinstruments,includinganewtypeofliquid-probearesuccessfullyintegratedtoidentify7differentflowpatterns.Thecharacteristicsoftheflowpatternsandthetransitionprocesswereobservedanddepictedinthispaper.Investigationrevealedthatthepressurelosswasmainlydependedontheflowpatterns.

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简介：Lid-drivenmixedconvectionhasbeengivenimmenseimportanceduetoitswiderangeofapplications.AT-shapedcavityisintroducedandpertinentparameterscontrollingmixedconvectionphenomenonareanalyzedinthispaper.Water-Al2O3nanofluidisconsideredinsidethecavitytoaugmentheattransferrate.Galerkinweightedresidualmethodoffiniteelementanalysisisappliedforthenumericalsimulations.Numericalsolutionisobtainedfordifferentsolidvolumefractionsofnanofluid(?=0-0.15),Grashofnumbers(Gr=0.1?5000)andReynoldsnumbers(Re=0.31?1000)inlaminarflowregime.Specialattentionisgivenontheanalysisofflowatthepuremixedconvectionregime.ItisfoundthatGrashof,ReynoldsandRichardsonnumbersalongwithsolidvolumefractionofnanofluidhavesignificanteffectonheattransfercharacteristicsinsidethecavity.ResultsarepresentedusingstreamlineandisothermcontoursalongwithrelatedvariationofaverageNusseltnumbersoftheheatedwallandaveragefluidtemperatureinsidethecavity.