简介：Multiphaseflowcontrolwithelectromagneticbraking(EMBr)iswidelyusedinthecontinuouscastingofsteelslabs.Thebasicaimoftheflowcontrolsystemoftheprocessistodelivermoltensteelfromtheladlethroughthetundish,uppertundishnozzle,slidegate,andsubmergedentrynozzleintothemoldregionwithminimaldefects.Thisrequirestheoptimizationofturbulencelevelsatameniscustoavoidbothanexcessivelyfastflow(whichcreateshighfluctuationsofthemeniscuslevelinadditiontoslagentrapment,surfacenonuniformities,andsurfacedefects)andinsufficientslowflow(whichleadstomeniscussolidification,inadequatefluxinfiltration,andsurfacedefects).Inthisstudy,aEulerian-LagrangianapproachisusedtoinvestigatetheeffectsofEMBrandArbubbleinjectiononthesurfaceflowvelocity.TheresultsshowthathighArinjectionratescanleadtoanincreaseinsurfacevelocity.

简介：以便在纵的方向在最相反的负担下面学习地震地孤立的桥的动态表演，为在纵的方向的车辆braking的一个动态方程被建立。一四或fiveorderRunge-Kutta方法被采用在braking力量下面获得一个车轮集合的时间历史反应。二次的discretization方法然后被用来在车辆braking力量下面把这时间历史转变成braking和一个结构的固定节点，和地震地孤立的桥的动态反应分析的弯曲力量时间历史用ANSYS被执行，一个通用有限元素分析软件。根据结果，地震隔离设计在墩之中导致braking力量的更合理的分布；车辆braking力量上的起始的braking速度的影响是可以忽略的；第一个车轮给了叶子桥的地点是最相反的停车地点；适用根据典型设计方法构造了的一座地震隔离桥在braking力量下面进入一个收益阶段，当当隔离时期被扩大，在墩的底部的砍的力量衰退时；当适用的地震隔离的收益排水量是不到5公里，收益力量比braking力量大时，设计要求能被满足。

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：Inthispaper,thehybridelectricvehiclebrakingprocessisresearched,byusingvariablesconsistsofHEVspeed,motorspeed,andstateofchargeestablished,functionsofmechanicalbrakingforce,regenerativebrakingforceandefficiencyofenergyrecoveryareconstructed,andthecontrolgoalistomaximizationtheenergyrecoveryefficiency.Underthefeedbackcontrolstrategy,withtheconstrainconditionofbrakingstrengthandbrakingstability,combiningexperimentsinADVISOR,indifferentexperimentsofdifferentworkingconditions,wecanseethatinUDDSCycle,theregenerativebrakingefficiencyisthebest.What’smore,comparedwithstrategiesinADVISOR,strategyproposedinthispaperisobviouslybetter.

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