英语文章总结范文Word文件下载.docx

1、 （4）本课题的局限性、不足之处，还有哪些尚待解决的问题。 （5）展望前景，或指出进一步研究的方向。 Conclusion通常使用现在时态Result和Conclusion本次选取5篇文章，第一篇，论文中的主要Result已在第2部分和第三部分中叙述，在Conclusion又重新总结了一下。 第二篇，论文中的主要Result写在Conclusion中。 第三篇，论文中的主要Result写在第3部分（3.CASESTUDIESANDRESULTS）中，Result和Conclusion是分开的。 第四篇，论文中的主要Result已第4部分的（IV. ResultsandDiscussion）中进

2、行叙述，Result和Conclusion是分开的。 第五篇，论文中的主要Result已第4部分的Resultsanddiscussion）（4. 中进行叙述，Result和Conclusion是分开的。第1篇题目：AnoverviewofNACA6-digitairfoilseriescharacteristicswithreferencetoairfoilsforlargewindturbinebladesIV. ConclusionsThetwo-dimensionalaerodynamicscharacteristicsoftheNACA63and64six-digitseriesof

3、airfoilsmeasuredintheNASALTPThavebeeninvestigated,withaviewtoverifyRFOILcalculationsathighReynoldsnumbers. Thefollowingconclusionscanbedrawn -Thezero-liftangleoftheNACA64-618airfoilneedstobeadjustedwith-0.4degrees. -Thezero-liftangleofTheNACA63-615needstobecorrectedwith-0.87degreesinthesmoothcaseand

4、with+1degreeincaseofwraparoundroughness. -ThemaximumliftcoefficientspredictedwithRFOILmatchtheLTPTdatawellatRe=3x106,butunderpredicttheCl,maxatRe=6x106by3.5%,upto6.5%atRe=9x106. -Itisuncertainiftheestablisheddifferencesinliftbetweenexperimentandcalculationsarecausedbyaconstantbiasinthemeasurementsor

5、bythefactthattheRFOILcodefailstopredicttherightlevelofmaximumlift. -RFOILconsistentlyunderpredictsthedragcoefficient. Thedifferenceisabout9%forawiderangeofairfoilsandReynoldsnumbers-NACAstandardroughnesscausesareductionintheliftcoefficientof18%to20%formostairfoilsfromtheNACA64series-Thezero-liftangl

6、eofairfoilNACA64-418withwrap-aroundroughnessneedsacorrectionof+0.54degrees. -Windtunnelexperimentsandside-by-sidetestsinthefieldwithonecleanrotorneedtobedonetobeabletobetterpredicttheeffectsofroughness. 写作特点 内容：第1句，概括了文章的的主要研究内容。第2句至第8句逐条的列出了文章的得出结论。 使用了被动语态，Thetwo-dimensionalaerodynamicscharacteris

7、ticsoftheNACA63and64six-digitseriesofairfoilsmeasuredintheNASALTPThavebeeninvestigatedhavebeeninvestigated. 主要时态为一般现在时态第2篇题目 HIGH-LIFTENHANCEMENTUSINGACTIVEFLOWCONTROLV. CONCLUSIONSThehigh-liftperformanceofanairfoilwithasingle-elementflapisenhancedsignificantlyusinganactiveflowcontrolsystemconsistin

8、gofspanwisefluidicactuatorsthatareintegratedneartheseparationpoint. Spanwisearraysofspanwise-oscillatingornon-oscillatingjetsissuetangentiallytothelocalsurfacefromaminiaturedownstreamfacingsurfacestep. Jetactuationleadstoflowattachmentofvaryingstreamwiseextentthatdependsonthejetmomentumcoefficientan

9、dtheformationofalowpressuredomainnearthejuncturebetweenthemainbodyandtheflap. Asaresult,liftisincreasedsubstantially,byasmuchas?CL=1.40,1.22and1.04atRec=6.7?105,8.3?105and1.0?106,respectively,for=4?. Inthepresentexperiments,threespanwiserowsoffluidicjetsareplacedinthevicinityofthejunctureandoperated

10、invariousbinationsleadingtosignificantincreasesinlift. Theupstream（x/c=0.59）andmiddle（x/c=0.61）actuators,whichareclosesttoseparation（x/c=0.62）aremosteffective,whilethedownstreamactuator（x/c=0.64）onlyproducesasignificantliftincrementwhenoperatedinconjunctionwithoneoftheotheractuators. Thedegreeofflow

11、attachmentincreaseswithjetmomentumcoefficientandsimultaneousoperationofmultipleactuatorscanincreasetheliftincrementfurtherevenwhentheflowisattached. Actuationresultsinastrongsuctionpeaknearthejuncture（Cp?7.5）andalsoleadstoincreasesinsuctiononthemainbodyoftheairfoilandneartheleadingedge. Theliftincre

12、mentismeasuredoverarangeofanglesofattack（0?12?）andisacpaniedbyanincreaseinlift-inducedpressuredragandanincreaseinnose-downpitchingmoment. Itisshownthatthehigh-liftperformancecanbeimprovedsignificantlybydesignmodificationsofthesurfaceinterfacebetweenthejetactuatorsandthesurroundingflow. Inparticular,

13、modifyingthejetorificesfroma“stepped”toa“recessed”configurationenhancestheinteractionofthejetswiththecrossflow,resultinginincreasedliftforagivenmomentumcoefficient,particularlyatlowerlevelsofC? Therecesseddesignalsoreducesthelossinliftcausedbythepresenceoftheorificesandtheattachedflowexhibitssignifi

14、cantlystrongersuctionpeaksneartheflapjunctureandtheleadingedge. AtC?=0.36%theupstreamactuatoryields?CL=0. and0.79forthesteppedandrecessed57configurations,respectively,andoperatingthebinationofupstreamandmiddleactuatorsatC?=0.36%eachyields?CL=0.78and0.92,respectively. Theeffectoftheactuatorjetsonthea

15、ttachedflowischaracterizedusingPIVmeasurementsoftheflowfieldovertheflapandadditionalhigh-magnificationmeasurementsinthevicinityoftheactuators. Intheabsenceofactuation,theflowseparatesnearthejuncturebetweentheflapandthemainbody（x/c=0.62）,formingarecirculatingdomainovertheflapandadetachedvorticitylaye

16、r. Actuationleadstopleteflowattachmentthroughthetrailingedgewithsignificantaccelerationoftheflowwithintheattachedboundarylayerdownstreamoftheactuatorsandoutsideoftheboundarylayeralongmostoftheflap. AtC=1.6%aninteractiondomaincontainingacross-streamvelocitypeak（2.3timesthemaximumspeedofthejetunderqui

17、escentconditions）isformedalongtheflapbetweentheactuatorjetandthefreestreamflowthatisparticularlyapparentusingtherecessedconfiguration.这篇文章的结论部分很特殊，统计的结果为565个单词，包含了4个段落。 第1段概括了文章的主要研究内容（activeflowcontrolsystem），第2段到第4段主要说明了文章的研究方法（experiment，PIV），以及一些具体的结果。主要时态为一般现在时态第3篇题目 REPRESENTATIONMETHODEFFECTS

18、ONGENETICALGORITHMIN2-DAIRFOILDESIGNVIBRATIONAL4. CONCLUSIONInthisarticle,BezierandParsecrepresentationmethodsaretestedintwodifferentflowconditions;subsonicandtransonicflows. InthefisttestcasebothrepresentationmethodsareparedviaVGAoptimizationtoolunderthesubsonicflowconditions. TheparisonbetweenBezi

19、erandParsecrepresentationmethodsisshowninFig. 8. ThisplotemphasizesthesuperiorityofParsecrepresentationmethod. InthesecondtestcasebothrepresentationmethodsareparedviaVGAoptimizationtoolunderthetransonicflowconditions. 11. ThisplotemphasizesthesuperiorityofBezierrepresentationmethod. Fromthesecasesit

20、isconcludedthatParsecmethodismoreglobalandmoreefficientthanBeziermethodinsubsonicflows. However,BeziermethodismoreflexiblethanParsecmethodwithintransonicflows.本篇文章相比于上篇文章内容上比较简短：统计结果为134个单词，包含1个段落第1句，概括了文章的的主要研究内容。第2句至第7句回顾了文章中的两个算例。第8句说明了本文方法的优越性，最后一句说明了本文方法的不足。 主要时态为一般现在时态句型 Inthisarticle,Theparis

21、onbetweenisshowninFig. FromthesecasesitisconcludedthatHowever,第4篇题目 UnsteadyFlowSimulationofaHigh-LiftconfigurationusingaLatticeBoltzmannApproachV. ConclusionsSimulationsofagenerichigh-liftgeometrywerecarriedoutusingtheLatticeBoltzmannbasedcodePowerFLOWwiththeframeworkofthe1stAIAACFDHighLiftPredicti

22、onWorkshopheldin20XX. Theresultsshownhereweretheonlyunsteadysimulationsamongallworkshopparticipantsandshowexcellentagreementofdragandliftforcesaswellascpdistributionsforallworkshopcases. GoodpredictionsintheregionofmaximumliftwereaparticularlydistinguishingfeatureoftheLatticeBoltzmannsimulations,ind

23、icatingtheimportanceofunsteadysimulationsincorrectlycapturingstronglyseparatedflowstructures. Theslightover-predictionofcL,maxobservedforthebaselinecasewasshowntobelargelyattributabletotheabsenceofslatandflapbracketsinthesimulations. Addingthesebrackets（Case3oftheworkshop）showsasignificantreductiono

24、fliftinparticularatthehigherangleofattack,bringingthesimulationresultstoalmostperfectagreementwithmeasuredresults. Theeffectofchangingflapangleswasalsowellcapturedbythesimulations. Thepositionoflaminar-to-turbulencetransitionwassetformostofthesimulationspresentedherebasedonpublishedexperimentalresul

25、tssincethemethodusedforthecurrentstudyusesawallmodelratherthanfullyresolvingtheboundarylayer. Fullyturbulentsimulationswerecarriedoutforselectedconfigurationsandshowedasignificantreductionoflift. Inadditiontotheworkshopcasesastudyofwindtunnelblockageeffectsisshownhere. Addingwallsinthesimulationcorr

26、espondingtothedimensionsofthewindtunnelledtoachangeofpredictedforcesconsistentwiththecorrectionsappliedtotheexperimentalresults. ComputationaltimesrequiredfortheunsteadysimulationsweregenerallyinthesameorderofmagnitudeorevenslightlybelowastheRANSsimulationspresentedbyotherworkshopparticipants,confir

27、mingthehighlevelofefficiencyoftheunsteadyLatticeBoltzmannmethod. Overall,thismethodwasshowntobeaninterestingandviablealternativetothepredominantlyusedRANSmethodsforthesimulationofhigh-liftwings.本篇文章的结论也相对较长,统计结果为329个单词，包含4个段落第1段概括了文章的的主要研究内容。 第2段对文章中的使用的计算方法中的laminar-to-turbulencetransition进行了说明。 第3

28、段文章中的使用的计算方法中的一点（Addingwallsinthesimulation）进行了说明。 第4段对文章的计算效率进行了说明。进一步说明文章方法的优越性。主要时态为一般现在时态第5篇题目 Designofanewurbanwindturbineairfoilusingapressure-loadinversemethod5. ConclusionsApressure-loadinversedesignmethodwassuccessfullyappliedtothedesignofahigh-loadedairfoilforapplicationinasmallwindturbine

29、forurbanenvironment. Thepressuredistributionofthedesignedbladesectionshowsasmoothincreaseofthebladepressure-load,definedasthepressuredifferencebetweentheupperandthelowersidesofthesection,fromtheleadingedgeupto20%oftheaxialchord. From20%upto80%oftheaxialchord,thepressure-loadisalmostconstantanditreducessmoothlytowardthetrailingedge. Theexperimentaltestingofthenewbladesection,asanisolatedairfoil,confirmedthehighmaximumliftandamoderatedrag. Futuredevelopmentswillconsidertheappl