简介：BasedonthetechniqueforpreparingLaCl3viadirectpyrolysisofrareearthchloridesolution,ajetpyrolysisreactorwasdesignedandtheintra-reactortemperatureandchemicalreactionswerenumericallysimulatedusingcomputationalfluiddynamics(CFD)technique.Theresultsshowthattheflowratevariationatthefuelinletdoesnotlargelyaffectthetemperatureinthereactor,whiletheincreaseinexternalpressureatthematerialinletrapidlydecreasestheaveragetemperature,Venturitemperature,andoutlettemperature.TheCH4andO2insidethereactorarecombustedcompletely,andwhenthematerialinletpressureis\90Pa,theLaCl3isfullypyrogenated.ThecontentsofCO2,La2O3,andHClfluctuateneartheVenturitubeandfinallystabilize.La2O3contentattheoutletisinatop-to-bottomgradient.

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简介：ThispaperintroducedtheresearchbackgroundandtechnicalfeaturesofBaosteel’ssinteringfluegasdesulfurization(FGD).Itwasalsonamedswirl-jet-absorbingwetlimestone-gypsumsinteringFGDtechnology.Bymeansofindustrialonlinepilotplants,throughcontinuousrunningandorthogonaltests,theeffectsofvariousinfluencingfactorsonSO2removalefficiencyofBaosteelsinteringfluegasdesulgurization(BSFGD)werestudiedcarefully.TheresultsindicatethattheslurrypHvalue,temperature(T)andflowrate(Q)ofinletfluegas,liquidlevel(H)intheabsorberandfluegasjetvelocity(V)arethemaininfluencingfactors.Furthermore,whenpHisbetween5.0and5.5,Hisbetween4.2mand4.3m,Qis43000m3/h,Tisbelow65℃andVisbetween20m/sand28m/s,thebestdesulfurizationefficiencycanbeavailable.

简介：Liquidmicro-jets,producedfromgasdynamicvirtualnozzles(GDVNs),areusedassamplecarriersforinteractionwithX-raybeaminserialfemtosecondcrystallography(SFX).Anumericalinvestigationoftheeffectofthefocusinggastypeontheliquidmicro-jetproperties(itslengthandthickness)ispresented.ThestudycomplementsourpreviousresearchontheinfluenceofoperatingconditionsandthenozzlegeometryonGDVNperformance.Theinfluenceofhelium,argon,carbondioxideandnitrogengases(atafixedmassflowrateof1.6×104mg/min)onfocusingpurewaterjet(flowrateof33μl/min)isanalysed.

简介：极端暴风雨在13172013年12月期间撞击了南部的中国，与破记录的每日的降雨率，大空间程度，和不平常地长的坚持。我们检验了什么导致了这重降雨进程，基于通过合成、诊断的方法的观察降雨数据和NCEP-NCAR分析数据。结果证明在副热带的西的喷气以内的Rossby波导引起了事件。Rossby波浪在东方地中海上从强壮的冷空气侵入发源进副热带的西的喷气。中东西的喷气与改进并且向北方变，宣传的Rossby波浪慢慢地东方并且加深了印度缅甸马槽，它从孟加拉和华南海的海湾把大量潮湿搬运了到南部的中国。在上面的对流层的强壮的分叉，由东方亚洲西的喷气的改进引起了，也在东南中国上赞成了重降雨过程。另外，Rossby波浪与negative-to-positive阶段移动和诺思大西洋摆动的改进被联系，但是在东方地中海的集中在副热带的西的喷气以内在Rossby波浪的东方繁殖起了关键作用。

简介：Thecontrollableactivethermo-atmospherecombustor(CATAC)hasbecomeautilizableandeffectivefacilitybecauseitbenefitstheopticaldiagnosticsandmodeling.Thispaperpresentsthemodelingresearchoftheauto-ignitionandflamesoftheH2/N2(H2/CH4/N2,orH2/H2O2/N2)mixtureonaCATAC,andshowscurvesvaryingwithtemperaturesofauto-ignitiondelay,theheightofthesiteofauto-ignitionofliftedflames,andflamelift-offheight.Theresultsofauto-ignitiondelayandthelift-offheightarecomparedtheexperimentalresultstovalidatethemodel.Aturningpointcanbeseenoneachcurve,identifiedwithcriteriontemperature.Itcanbeconcludedthatwhentheco-flowtemperatureishigherthanthecriteriontemperature,theauto-ignitionandliftedflameofthemixturearenotstable.Conversely,belowthecriteriontemperature,themixturewillauto-igniteinastablefashion.Stabilizationmechanismsofauto-ignitionandliftedflamesareanalyzedintermsofthecriteriontemperature.

简介：自从喷气和爆炸，气体的产品被锋利的接口分开，传统的弄平的粒子水动力学(SPH)方法是困难的在接口避免计算不稳定性。多相的SPH(MSPH)方法被用于改进稳定性，哪个smoothes粒子密度并且在接口使压力连续。形成过程的喷气的数字例子被用来测试MSPH方法的能力。结果证明方法为在喷气和气体的产品之间的大密度坡度仍然是算法稳定性并且有潜在的申请到爆炸和喷气问题。塑造的费用的开始方法的效果也被讨论。

简介：摘要简要介绍了特殊单立管（AD-jet）排水系统的基本结构，探讨如何计算特殊单立管（AD-jet）排水系统的最大排水量，着重分析特殊单立管（AD-jet）排水系统的具体设计。

简介：为本地人的明确的表情，即时没有生产率模型被建议不在狂暴的甲烷空气模仿形成燃烧。混合部分和分级的驱散的平均生产率通过二单个变量的概率密度功能的近似从渐近线被获得。理论在theoxygen消费地区从氧化氩氮的机制从Zel-dovich机制，而是可以忽略的贡献预言了重要贡献。建议模型被用来不在pilotmethane空气喷气散开燃烧模仿形成。模拟结果与CFD软件获得的那些相比是流畅的模块。有USA的SandiaNational实验室给的试验性的数据的预言的确认显示建议模型比另外的模型产出更好的结果，并且偏差不到5%。并且在一些完全反应地区，模拟结果与试验性的数据一样是平的。压力模型和standardk-ω建模的雷纳德可实现的k-ε模型也被调查预言狂暴的燃烧反应，它证明模拟由ω模型根据试验性的数据的标准k-燃烧生产的速度，温度，和集中结果。

简介：对于SOHO一族和中小型企业来说．选择一款性能稳定可靠．耗材成本低廉的多功能一体机是一件非常重要的事，它不仅可以大大提高工作效率．降低工作成本。而且，另外一个重要的优势在于，一体机可以为本就不宽松的办公环境节约相当大的空间。

简介：在角落分离/货摊控制上在endwall依附的旋涡发电机喷气(VGJ)的效果被数字模拟在高拐弯处的线性压缩机串联调查。结果证明角落分离能显著地被减少，它象一个更一致的出口流动角度和全部的压力侧面一样导致一个更宽的操作范围。在近货摊的操作点，全部的压力损失的最大的相对减小直到32.5%，，而喷气团比率是不到0.4%，。基于详细流动结构的分析，endwall十字流动和角落分离上的VGJ的三主要效果被识别。一个人是增加正切的速度部件相反的穿过流动，因此禁止endwall喷气出口附近的第二等的流动。第二是作为一个空气篱笆压制经过旋涡的pitchwise延期。第三是在起来洗的方面上向主流打扫低精力液体并且把主流的液体搬运到endwall到重新给与能量down-washed方面上的边界层。

简介：Ageneratoroftheglidingarcjet(GAJ),whichisdrivenbyatransversemagneticfield,isdevelopedtoproducenon-equilibriumplasmaatatmosphericpressure.ThegastemperatureisestimatedusingthespectrumofOHradicalstobeabout2400±400K.Thedeterminationsofelectrontemperatureandelectrondensitybyusingaline-ratiomethodareelaboratedfortheglidingarcjetplasma.Thisline-ratiomethodisbasedonacollisional-radiativemodel.Theexperimentresultsshowthatelectrontemperatureisabout1.0eVandelectrondensityisabout6.9×1014cm-3.Obviously,theplasmaofGAJisinanon-equilibriumstate.

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简介：Numericalsimulationofgas-solidflowinatwo-dimensionalfluidizedbedwithaninclinedjetwasperformed.Thenumericalmodelisbasedonthetwo-fluidmodelofgasandsolidsphaseinwhichthesolidsconstitutiveequationsarebasedonthekinetictheoryofgranularflow.TheimprovedICEalgorithm,whichcanbeusedforbothlowandhigh-velocityfluidflow,wereusedtosolvethemodelequations.Themechanismofjetformationwasanalyzedusingbothnumericalsimulationsandexperiments.Theemergenceandmovementofgasbubbleswerecapturednumericallyandexperimentally.Theinfluencesofjetvelocity,nozzlediameter,nozzleinclinationandjetpositiononjetpenetrationlengthwereobtained.Asemi-empiricalexpressionwasderivedandtheparameterswerecorrelatedfromexperimentaldata.Thecorrelationequation,whichcanbeeasilyusedtoobtaintheinclinedjetpenetrationlength,wascomparedwithourexperimentaldataandpublishedcorrelationequations.

简介：Adirect-currentairplasmajetoperatedunderwaterpresentsthreestablemodesincludinganintermittently-pulseddischarge,aperiodically-pulseddischargeandacontinuousdischargewithincreasingthepowervoltage.Thethreedischargemodeshavedifferentappearancesfortheplasmaplumes.Moreover,gapvoltage-currentcharacteristicsindicatethatthecontinuousdischargeisinanormalglowregime.Spectrallinesfromreactivespecies(OH,N_2,N_2~+,H_α,andO)havebeenrevealedintheemissionspectrumoftheplasmajetoperatedunderwater.SpectralintensitiesemittedfromOHradicalandoxygenatomincreasewithincreasingthepowervoltageorthegasflowrate,indicatingthatreactivespeciesareabundant.Thesereactivespeciescausethedegradationofthemethylenebluedyeinsolution.Effectsoftheexperimentalparameterssuchasthepowervoltage,thegasflowrateandthetreatmenttimeareinvestigatedonthedegradationefficiency.Resultsindicatethatthedegradationefficiencyincreaseswithincreasingthepowervoltage,thegasflowrateorthetreatmenttime.Comparedwithdegradationintheintermittently-pulsedmodeortheperiodically-pulsedone,itismoreefficientinthecontinuousmode,reaching98%after21mintreatment.

简介：Penetrationdepth,spraydispersionangle,dropletsizesinbreakupprocessesandatomizationprocessesareveryimportantparametersincombustorofair-breathingengine.Theseprocesseswillenhanceair/fuelmixinginsidethecombustor.Experimentalresultsfromthepulsedair-assistliquidjetinjectedintoacross-flowareinvestigated.Andexperimentswereconductedtoarangeofcross-flowvelocitiesfrom42～136m/s.Airisinjectedwith0～300kPa,withair-assistpulsationfrequencyof0～20Hz.Pulsationfrequencywasmodulatedbysolenoidvalve.PhaseDopplerParticleAnalyzer(PDPA)wasutilizedtoquantitativelymeasuringdropletcharacteristics.High-speedCCDcamerawasusedtoobtaininjectedspraystructure.Pulsedair-assistliquidjetwillofferrapidmixingandgoodliquidjetpenetration.Air-assistmakesaveryfinedropletwhichgeneratedmist-likespray.Pulsedair-assistliquidjetwillintroduceadditionalsupplementaryturbulentmixingandcontrolofpenetrationdepthintoacross-flowfield.Theresultsshowthatpulsationfrequencyhasaneffectonpenetration,transversevelocitiesanddropletsizes.Theexperimentaldatageneratedinthesestudiesareusedforadevelopmentofactivecontrolstrategiestooptimizetheliquidjetpenetrationinsubsoniccross-flowconditionsandpredictcombustionlowfrequencyinstability.

简介：Icing(oriceaccretion)isaphenomenoninwhichsuper-cooledwaterdropletsimpingeandaccreteonabody.Itiswellknownthaticeaccretiononbladesandvanesleadstoperformancedegradationandhascausedsevereaccidents.Althoughvariousanti-icinganddeicingsystemshavebeendeveloped,suchaccidentsstilloccur.Therefore,itisimportanttoclarifythephenomenonoficeaccretiononanaircraftandinajetengine.However,flighttestsforiceaccretionareveryexpensive,andinthewindtunnelitisdifficulttoreproduceallclimateconditionswhereiceaccretioncanoccur.Therefore,itisexpectedthatcomputationalfluiddynamics(CFD),whichcanestimateiceaccretioninvariousclimateconditions,willbeausefulwaytopredictandunderstandtheiceaccretionphenomenon.Ontheotherhand,althoughtheicingcausedbysuper-cooledlargedroplets(SLD)isverydangerous,thenumericalmethodhasnotbeenestablishedyet.ThisiswhySLDicingischaracterizedbysplashandbouncephenomenaofdropletsandtheyareverycomplexinnature.Inthepresentstudy,wedevelopaniceaccretioncodeconsideringthesplashandbouncephenomenatopredictSLDicing,andthecodeisappliedtoafanrotorblade.ThenumericalresultswithandwithouttheSLDicingmodelarecompared.Throughthisstudy,theinfluenceoftheSLDicingmodelisnumericallyclarified.

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简介：[英国《飞行国际》2007年6月6日报道]巴西航空工业公司（Embraer）近日发布了一个用于E—Jet飞机的软件包，该软件包允许机载飞机健康分析和诊断（AHEAD）项目向地面传送实时的飞机和发动机故障。