简介：Thisarticlebrieflyreviewswindturbineaerodynamics,whichfollowsanexplanationoftheaerodynamiccomplexity.Theaerodynamicmodelsincludingblademomentumtheory,vortexwakemodel,dynamicstallandrotationaleffect,andtheirapplicationsinwindturbineaerodynamicperformancepredictionarediscussedanddocumented.Recentprogressincomputationalfluiddynamicsforwindturbineisaddressed.Windturbineaerodynamicexperimentalstudiesarealsoselectivelyintroduced.

简介：Generallyspeaking,mainflowpathofgasturbineisassumedtobeperfectforstandard3Dcomputation.Butinrealengine,theturbineannulusgeometryisnotcompletelysmoothforthepresenceoftheshroudandassociatedcavityneartheendwall.Besides,shroudleakageflowisoneofthedominantsourcesofsecondaryflowinturbomachinery,whichnotonlycausesadeteriorationofusefulworkbutalsoapenaltyonturbineefficiency.Ithasbeenfoundthatneglectshroudleakageflowmakesthecomputedvelocityprofilesandlossdistributionsignificantlydifferenttothosemeasured.Evenso,theinfluenceofshroudleakageflowisseldomtakenintoconsiderationduringtheroutineofturbinedesignduetoinsufficientunderstandingofitsimpactonendwallflowsandturbineperformance.Inordertoevaluatetheimpactoftipshroudgeometryonturbineperformance,a3Dcomputationalinvestigationfor1.5-stageturbinewithshroudedbladeswasperformedinthispaper.Thefollowinggeometryparameterswerevariedrespectively:-Inletcavitylengthandexitcavitylength,-Shroudoverhangupstreamoftherotorleadingedgeanddownstreamofthetrailingedge,-Shroudradialtipclearance,Theaimofthispaperistoisolatetheinfluenceofshroudandcavitygeometrymodificationsonturbineaerodynamicperformanceandtoobtaincleartrendsofefficiencychangescausedbydifferenttipshroudgeometry.Moreover,interactionbetweenleakageflowandmainstreamfordifferentshroudconfigurationisalsohighlightedinordertopenetrateintothephysicalmechanismsproducingthem.Duetothelimitationsofthemodelselectedinthispaper,theaimofresearchisnottoputforwardthedesignrulesofturbineshroud.However,theresultsobtainedfromthisworkwillbeusefultotheintegrateddesignandoptimizationofturbinewithshroudedblades.

简介：OverallstateofChinesewindturbineexportStartingfromzero,theexportofChinesewindturbinesenjoyedarelativelystablerisefrom2007to2010.Since2011,itbursttosoar.Thenewcapacitydeliveredin2011reachedover3timesbiggerthanthecumulativelydeliveredcapacityin2010.In2012thenewcapacitydeliveredsurpassedthecumulativelydeliveredcapacityin

简介：指南翼在井汽轮机被安装以便改进它的效率，自我旋转的特征并且离开设计性能与拖延。这个工作试图根据动量理论解释这些指南翼的角色。在上游的翼在比下游的提高效率是更有效的，这被显示出。为指南翼的一个设计方法基于试验性的数据和潜在的理论被建议。作者执行的试验性的研究证实理论求婚了。关键词井汽轮机-指南翼-串联-潜在的流动-波浪精力变换器-海洋工程CLC数字TK72

简介：FourgianthydraulicturbinesofYantanHydropowerSta-tionlocatedontheHongshuiRiver,GuangxiProvincearenowunderconstructionbytheHarbinElectricMachineryWorks(HEMW)ofChinaHarbinPower-PlantEquipmentCorporation(GROUP).TheturbinewillbecomethelargestindimensionforFrancistypeturbineevermadeinChina.Theexternaldiameteroftherunneris8.6m,whichissupposedtoberankedNo.3amongthelargestrunnersofthiscategoryintheworld.Eachturbineisrated

简介：Thediaphragmofsteamturbineisoneofthemainpartsofthepassageunitforairflowingandthediaphragmofsteamturbineisgenerallymadebywelding,butduringthecourseofwelding,somecracksoftenhavehappened,thesecracksthreatensafetyproductiononthespot,soitisnecessarytoanalyzethestrengthofsteamturbinediaphragmwithacrack.Forstudyingitsworkingconditionandperformancewithacrack,thethree-dimensionalfiniteelementmodel(FEM)withthesoftwareANSYS10.0isestablishedaccordingtotheactualworkingparameters.Withthemodel,thedeformationresultsandstressfieldresultsareanalyzedandthemaximumdisplacementandstressvaluearecalculated,meanwhile,themaximumstresschangewithcrackdepthofsteamturbinediaphragmisanalyzed.Itprovidesagoodfoundationforsolvingtheprobleminproduction.

简介：Geometricparametersoftheturbinebladeareclassifiedaccordingtotheirdestinedfunctions,andthemathematicaldefinitionofthoseparametersinthesectioncurveisintroducedindetail.Somepartsofthesectioncurveshapecanbeadjustedfreely,offeringmoreflexibilitytodesigners.

简介：Thediaphragmofsteamturbineisoneofthemainpartsofthepassageunitforairflowing.Forstudyingitsworkingconditionandperformance,thethree-dimensionalfiniteelementmodel(FEM)withthesoftwareANSYS10.0isestablishedaccordingtotheactualworkingparameters.Withthemodel,thedeformationresultsandstressfieldresultsareanalyzedandthemaximumdisplacementandstressvaluearecalculated,meanwhile,theircorrespondingpositionsarefound.Itprovidesagoodfoundationforsolvingtheprobleminproduction.

简介：高度有效的汽轮机用尽更弥漫没有与汽轮机的最后旋转的排考虑不稳定的相互作用，不能被设计。在文学描述的以前的调查为改善与涡轮机器的另外的部分的相比显示出一个很高的潜力更弥漫。一台典型煤气的汽轮机的一个规模模型用尽更弥漫试验性地被调查。为了调查旋转的影响，醒来，没有象有有2公里的一个可变速度的旋转圆柱的轮辐车轮的大小一样的一个说的车轮的大小--或模仿汽轮机转子的10公里轮辐醒来被做。象2D-Laser-Doppler-Velocimeter(LDV)一样的使小型化的3洞灵魂探针被用来调查速度侧面。122静态的压力拍被用来测量几轴、环绕的静态的压力分布。没有一个轮辐车轮环形更弥漫在笼罩分开因为所有打漩配置。为有2公里轮辐车轮的大小，分开更弥漫当使测试钻塔操作参数不变时，是不稳定的。为一非旋转10公里轮辐车轮并且以旋转速度不到1,000rpm，环形更弥漫在笼罩分开了。增加10mm轮辐车轮的旋转速度，流动不比没有轮辐，车轮完成在笼罩和高得多的压力恢复分开了。

简介：Thispaperreportsawind-poweredwaterpumpingsystemimplementedinruralsideofPakistan.ThedesignmethodologypresentedinthispapershallenhancetheefficiencyoftheexistingSavoniusturbine’sperformancebymodifyingitaerodynamically.BladeswithdifferenttwistanglesaredesignedinSolidEdgeandanalyzedusingcomputationalfluiddynamics(CFD)withANSYSFLUENTsoftware.Staticandrotationalanalysesareperformedtogetoptimizedtwistangleandresultsarehighlighted.Theperformancesoftheturbineinbothstaticandrotationalanalysesarecompared.

简介：HuanengShanghaiGasTurbinePowerPlantisseatedatShidongkou,BaoshanDistrict,Shanghai.Itisasupportingitemofthe“gastransportingfromwesttoeast”projectinChinaandakeyprojectforthedevelopmentofcleanenergypowergenerationinShanghai.TheprojectcommencedtoconstructinAprilthisyear.

简介：Elbowdraft-tubesarewidelyusedinlargeandmedium-sizedhydropowerstationsinmanycountries.Duringtheapplication,handlingthesomatotypeofelbowtubeshasbeenfoundchallenging:inordertomaintainthedesignedshapeofdrafttubeandtomeettherequirementofconstructionlofting,theconfigurationofreinforcingbarsandthefabricationoftemplates,thegeometryofelbowtubeshastobeaccuratelycalculatedtodrawengineeringgraphics.Basedonthederivedequationsinthispaper,themotionofelbowtubecurveenvelopeissimulatedbyusingcomputers,whichshowsdirectlythesmoothnessofthecurveandprovidesdynamicsimulationforthestudyandoptimizationofthedesignandconstructionofelbowdrafttubes,alongwiththefrontviewandbottomview.

简介：一台成双的单向性的推动汽轮机被建议了以便提高波浪精力植物的表演。这个汽轮机系统使用二台单向性的推动汽轮机，他们的流动方向与对方不同。然而，汽轮机特征没迄今为止被澄清。在稳定的流动条件下面的一台单向性的推动汽轮机的表演被在这研究与大活塞/柱体使用一条风隧道试验性地调查。然后，成双的推动汽轮机的效率被伪稳定的分析用试验性的结果估计了。

简介：Thispaperpresentsreal-timemonitoringdataandanalysisresultsofthenon-stationaryvibrationsofanoperationalwindturbine.Theadvancedtime-frequencyspectrumanalysisrevealsvariednon-stationaryvibrationswithtimevaryingfrequencies,whicharecorrelatedwithcertainsystemnaturalmodescharacterizedbyfiniteelementanalysis.Undertheeffectsofstrongwindload,thewindturbinesystemexhibitscertainresonancesduetobladepassingexcitations.Thesystemalsoexhibitscertaininstabilitiesduetothecouplingofthetowerbendingmodesandbladeflapwisemodewithbladepassingexcitationsunderthevariationofwindspeed.Ananalyticalmodelisusedtoelaboratethenon-stationaryandinstabilityphenomenaobservedinexperimentalresults.ThepropertiesofthenonlinearinstabilitiesareevaluatedbyusingLyapunovexponentestimation.

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简介：Inordertoimprovetheperformanceofawellsturbinetheeffectofguidevaneswithvariousgapsbetweenturbinerotorandguidevanehasbeenclarifiedbymodeltestingandnumericalsimulation.Theresultshavebeencomparedwiththoseofthecasewithoutguidevanes,ItisfoundthattheoverallCharacteriticsareconsiderablyimprovedbytheinletguidevanes.Furthermore,asuitablechoiceofdesignfactorforthegaphasbeensuggested.

简介：Thermalfatigue(TF)isoneofthemostimportantfactorsthatinfluenceturbine'slife.Thispaperestablishesa3Dsolid-fluidcouplingmodelforasteadytemperatureanalysisofahigh-pressureturbinenozzleatdifferentturbineinletgastotaltemperatures(TIGTTs).Thetemperatureanalysissuppliesthetemperatureloadforsubsequent3Dfiniteelementanalysistoobtainthestrainvalues.Followingthis,thepredictionoftheTFlifeismadeonthebasisofequivalentstrainrange.TheresultsshowthatthestrainincreaseswithTIGTT,andthepredictedTFlifedecreasescorrespondingly.ThislifepredictionwasconfirmedbyoneTFtest.

简介：Ageneralnumericalmethodispresentedforcalculatingsteadythree-dimensionalandtwo-phaseturbulentreactiveflowswithanonstaggeredbody-fittedcoordinatesysteminanannulargasturbinecombustorwiththedumpdiffuser.Themodifiedtwo-equationmodelandtheEDCturbulentcombustionmodelareusedforthegasphase.TheliquidphaseequationsaresolvedinaLagrangianframeofreferencebyPSICalgorithm.Theeffectofdifferentvelocityprofilesattheentryoftheprediffuseroncombustorflowcharacteristicsiscalculated.

简介：由使用ABAQUS/Explicit，动态过程一近海风汽轮机(任何东西)乘在前面方向的5000DWT的一艘轮船受灾被模仿。任何东西位于一种综合安装技术构造的一个大规模对桶基础。根据模拟结果，在轮船碰撞下面，塑料地区的某个范围出现在桶基础，和具体塑料地区的弧转变结构的一个本地区域以内严重被损坏。因为任何东西塔的压力水平是相对低的，OWT塔是影响的更少。因为短舱和片的团直到400t，大惯性的力量在OWT塔的顶被产生。塔的排水量在在在惯性的力量的行动下面的1s的结束的轮船碰撞的相反的方向。仅仅在轮船鞠躬有次要的损坏。大多数动能被转变成塑料驱散并且由桶基础的弧转变结构吸收了。

简介：在这研究，垂直的轴有灵活的片的潮汐的汽轮机被调查。焦点在在汽轮机网络输出力量上分析灵活机翼类型和片灵活性的效果上。到这个目的，五个不同灵活机翼(对称、非对称)被采用。结果证明一个厚灵活对称的机翼罐头的使用有效地与那相比增加产量力量与常规僵硬的片可完成。而且，与不太灵活或僵硬的片对比，高度灵活的片的使用没被推荐。