简介：Lhasa,tosomeextent,isregardedasaholidaycity.Itishardtomeetpeoplewhentheyareinarush.Wheneverapilgrimageprocessionpassesby,youcanalwaysseethepilgrimsholdingtheirprayingwheels,followedbydogs,whiletheywalkpeacefullyalongthepathofthepilgrimage.Ontheedgesofstreetsandlaneways,teabarsareteemingwithpeopleplayingcardsorchatting.Oncetheysitdown,theymighteasilylethalfadayslipby.

简介：Basedontheoverallanatysisofthefloatingpopulationamongbigandmedium-sizedcitiesinChina,thispaper,bymeansofstatisticsandquestionnaires,makesasystematicalstudyonthemigratoryfeaturesofthefloatingpopulationinMianyang,itsemploymentstructure,migratingcausesandchannels,Accordingtothefindings,theauthorfindsafactthatwiththestrategyofWesternDevelopment,andwiththeconstructionofscienceandtechnologycityofMianyang,themigratinginMianyangconformstothegeneralpatternsofthemigration,whichhashappenedinthosebigandmedium-sizedcitiesinChina.Inaddition,thecityhasanewbutuniquefeature-economicfactor,asthedrivingforceofpopufationmigration,isquitedistinctfromthatofthosecitiesineasternareasofChina.

简介：Aninnovativefloatingmooringsystemwithtwoormoreindependentfloatingmooringplatformsinthemiddleandonerigidplatformoneachsideisproposedforimprovingefficiencyandsafetyinshallowwater.Forthisnewsystem,mostofcollisionenergyisabsorbedthroughthedisplacementoffloatingplatforms.Inordertoillustratethevalidityofthesystem,aseriesofmodeltestswereconductedatascaleof1:40.Thecoupledmotioncharacteristicsofthefloatingmooringplatformswerediscussedunderregularandirregularwaves,andtheinfluencesofwavedirectionandothercharacteristicsondynamicresponseofthesystemwereanalyzed.Theresultsshowthatthemooringsystemissafestat0°ofwaveincidentangle,whereasthemostdangerousmooringstateoccursat90°ofwaveincidentangle.Motionresponsesincreasewiththeincreaseofwaveheight,butarenotlinearlyrelatedtochangesinwaveheight.

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简介：—Analyticalandnumericalinvestigationismadeofthesourcepotentialforfloatingstructurewithforwardspeedinwaves.Aparticularformisselectedfornumericalapplications,wherethedoublein-tegraloftheGreenfunctionistransformedintothesingleoneandtheoscillationcharacteristicsforintegrandsinthespecificcomputationdomainaretreatednumerically.Acomparisonofcalculatedexam-p1eswithpublisheddataisgivenanditshowsthatthenumericalsimulationissatisfactoryandtheaccura-cyisadequatetoengineeringapplication.

简介：现在的学习理论上以及试验性地基于线性波浪理论调查在波浪和一连串的多孔的圆形的柱体之间的相互作用与或没有一个内部多孔的盘子。设计更有效的漂浮的防波提，通过数组宣传的波浪的传播率被评估。在数组的每柱体是部分用多孔的材料做的。明确地，它拥有多孔的sidewall和一个透不过的底部。另外，一个内部多孔的盘子水平地在柱体内被修理。它更有效地驱散波浪并且消除sloshing现象。当一个层次相互作用理论被采用在很多身体之中处理水动力学相互作用时，Kagemoto和Yue(1986)建议的途径被采用解决多重散布问题，它高效地节省计算时间。同时，有一连串的多孔的柱体的一系列模型测试在波浪盆被执行验证理论工作和计算结果。柱体，内部多孔的板的地点，和在邻近的柱体之间的间距的草稿也被适应在波浪驱散上调查他们的效果。

简介：Theartificialecologicalfloatingbediswidelyusedinriversandlakestorepairandpurifypollutedwater.However,thewaterflowpatternandthewaterleveldistributionaresignificantlychangedbythefloatingbeds,andtheinfluenceonthewaterflowisdifferentfromthatofaquaticplants.Inthispaper,basedonthecontinuousporousmediamodel,amoveabletwo-layercombinationmodelisbuilttodescribethefloatingbed.Theinfluencesofthefloatingbedsonthewaterflowcharacteristicsarestudiedbynumericalsimulationsandexperimentsusinganexperimentalwaterchannel.Thevariationsofthewaterleveldistributionarediscussedunderconditionsofdifferentflowvelocities(v=0.1m/s,0.2m/s,0.30m/s,0.4m/s),floatingbedcoveragerates(20%,40%,60%)andarrangementpositionsawayfromthechannelwall(D=0m,0.1m,0.2m).Theresultsindicatethattheflowvelocityincreasesunderthefloatingbeds,andthewaterlevelrisessignificantlyunderhighflowvelocityconditionsintheupstreamregionandthefloatingbedregion.Inaddition,theaveragerisingwaterlevelvalue(ARWLV)increasessignificantlywiththeincreaseofthefloatingbedcoveragerate,andthearrangementpositionoffloatingbedsintherivercanalsogreatlyinfluencethewaterleveldistributionunderahigh-flowvelocitycondition(v?0.2m/s).

简介：AccordingtoXinhuaNet,since2010,thesecondrunofYunnanHIV/AIDSPreventionandCareProjecthasreachedthetargetedpeoplewithmassiveworkonAIDSPrevention.Publicitytothefloatingpopulationisveryeffective.ThesecondrunofYunnanAIDSPreventionProjectstartedinMay2010,andthiscyclewilllastfromJune2010toDecember2012in17countiesincludingAnning,Huize,TonghaiandZhenxiong.Itsgoalsaretodiscovereffectivemodestomanagethefinancialcapital,andtoimprovethecapacitybuildingofAIDSpreventionteams,aswellastopromoteandutilizeinternationalanddomesticsophisticatedAIDS

简介：Theauthorshaveinventedtheuniqueoceanwavepowerstation,whichiscomposedofthefloatingtypeplatformwithapairofthefloatsliningupattheintervalofonewavepitchandthecounter-rotatingtypewavepowerunit,itsrunnersaresubmergedintheseawateratthemiddlepositionoftheplatform.Suchprofilesmaketheflowvelocityattherunneristwicefasterthanthatofthetraditionalfixed/caissontypeOWC,ontheidealflowconditions.Besides,therunnerscounter-rotatetheinnerandtheouterarmaturesofthepeculiargenerator,respectively,andtherelativerotationalspeedisalsotwicefasterthanthespeedofthesinglerunner/armature.Suchcharacteristicsmaketherunnerdiameterlarge,namelytheoutputhigher,asrequested,becausethetorqueofthepowerunitneveractonthefloatingtypeplatform.Atthepreliminaryreseach,thispaperverifiestogetthepowerusingaWellstypesinglerunnerinstalledinthemodelstation.Therunnertakestheoutputwhichisaffectedbytheoscillatingamplitudeoftheplatform,therotationalspeedandtheinertiaforceoftherunner,etc.

简介：Thispaperdiscussesthenumericalmodelingofthedynamiccoupledanalysisofthefloatingplatformandmooring/risersusingtheasynchronouscouplingalgorithmwiththepurposetoimprovethecomputationalefficiencywhenmultiplelinesareconnectedtotheplatform.Thenumericalmodeloftheplatformmotionsimulationinwaveispresented.Additionally,howtheasynchronouscouplingalgorithmisimplementedduringthedynamiccouplinganalysisisintroduced.ThroughacomparisonofthenumericalresultsofourdevelopedmodelwithcommercialsoftwareforaSPARplatform,thedevelopednumericalmodelischeckedandvalidated.

简介：一个创新水动力学理论和数字模型被开发帮助在二一起深海的漂浮身体上改进波浪飘移力量的数字预言的效率，精确性，和集中。波浪飘移力量被来源力量和相应格林函数的双集成在身体表面上表示，它基于动量保存与远域公式一致并且分享在每身体上提供飘移力量的近的域计算的优点。数字结果通过比较一般的远地模型和压力积分模型，以及用软件HydroStar开发的中间的地模型被验证。

简介：UsingMassonpineasspecimens,whendryingmediumsareoverheatedsteamandhot-airrespectively,preheatingcharacteristicsofwoodundervacuum-floatingpressuredryingarediscussedbymeasurementofinternaltemperaturefieldandvariationofmoisturecontentduringperiodofpreheating.Therelationshipbetweendryingmediumconditionsanddryingrateofwoodrevealsthat,firstly,comparedwithprocessofair-drying,timeneededtobepreheatedundervacuum-floatingdecreaseddramatically,meanwhile,themagnitudeofcondensationonthesurfaceisrelativelylarger.Secondly,dryingrateofwoodundervacuum-floatingpressureincreasescoupledwithtemperatureofmedium,reductionofabsolutepressure,andraiseoffluctuationrateofpressure.Thesequenceoffactorscontributiontodryingrateislistedasfollowing:temperatureofmedium(t)>fluctuationrateofpressure(f)>absolutepressure(p).

简介：ATime-domainHigher-OrderBoundaryElementMethod(THOBEM)isdevelopedforsimulatingwave-currentinteractionswith3-Dfloatingbodies.ThroughaTaylorseriesexpansionandaperturbationprocedure,themodelisformulatedtothefirst-orderinthewavesteepnessandinthecurrentvelocity,respectively.Theboundaryvalueproblemisdecomposedintoasteadydouble-bodyflowproblemandanunsteadywaveproblem.Higher-orderboundaryintegralequationmethodsarethenusedtosolvetheproposedproblemswithafourth-orderRunge-Kuttamethodforthetimemarching.Anartificialdampinglayerisadoptedtodissipatethescatteringwaves.Differentfromtheothertime-domainnumericalmodels,whichareoftenfocusedonthewave-currentinteractionwithrestrainedbodies,thepresentmodeldealswithafloatinghemisphere.Thenumericalresultsofwaveforces,waverun-upandbodyresponseareallinacloseagreementwiththoseobtainedbyfrequency-domainmethods.Theproposednumericalmodelisfurtherappliedtoinvestigatewave-currentinteractionswithafloatingbodyofcomplicatedgeometry.Inthiswork,theregularandfocusedwavecombinedwithcurrentinteractingwithatruss-sparplatformisinvestigated.

简介：为了当上面的部分与某个顺序和亲戚传播了时，与一个漂浮的库模仿multibody系统的动态回答，加速，同类的矩阵方法被采用与一个漂浮的库为一个四身体的系统建模并且模仿，当上面的部分顺序或同时地被散布时，运动被分析。滚动，摇晃并且胀起当multibody系统分别地在与风装载的波浪负担或单个脉搏风负担一起的静态的水的条件下面时，时间的变化被获得。在单个脉搏风负担下面的每个关节的片刻变化是也增加了。数字结果证明漂浮的底摇晃没到上面的部分顺序或同时地传播了的传播时间或形式被影响，当时滚动并且胀起主要取决于传播时间和形式。摇晃并且胀起的运动被吝啬的风负担显著地影响。单个脉搏风负担也在动态回答上有影响。在单身者的关节3和关节4脉搏风环境的转矩可以是两次那在无风的环境当系统与60s传播时持续时间。

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简介：Alongwiththeflourishingofthewindenergyindustry,floatingoffshorewindturbineshavearousedmuchinterestamongtheacademiaaswellasenterprises.Inthispaper,theeffectsofthesupportingplatformmotionontheaerodynamicsofafloatingwindturbinearestudiedusingtheopensourceCFDframeworkOpenFOAM.Theplatformmotionresponses,includingsurge,heaveandpitch,aresuperimposedontotherotationofthewindturbine.Thrustandtorqueonthewindturbinearecomparedandanalysedforthecasesofdifferentplatformmotionpatternstogetherwiththeflowfield.Itisshownthatthemovementofthesupportingplatformcanhavelargeinfluencesonafloatingoffshorewindturbineandthusneedstobeconsideredcarefullyduringthedesignprocess.

简介：在飞机坠毁，轮船碰撞，和另外的事故以后产生的负担可以破坏很大的漂浮的结构(VLFS)并且创造另外的接头负担。在这研究，负担被考虑建立的轮船碰撞和波浪的联合效果打手势为多身体VLFS的微分方程。一个时间领域计算方法被建议在波浪计算VLFS的接头负担。LonguetHiggins模特儿被雇用模仿随机的波浪负担。液体力量和水动力学系数用DNVSesam软件被获得。运动当频率域水动力学系数被变换成运动的存储器函数时，微分方程被使用时间域方法计算时间域的微分方程。由于波浪和影响负担的联合行动，高周波的摆动在接头负担的时间历史曲线被观察。在0的波浪方向？

简介：

简介：Verticalaxiswindturbines（VAWTs）areadvantageousforthedevelopmentoflarge-scaleoffshorewindpowerbecausethedrivesystemislocatedatthebottomoftheturbine.Thisstudyinvestigatesthestructuralstrengthofatri-floaterfloatingfoundationsupportinga2.6MWDarrieusVAWT.Finiteelementmodelsofthefloatingfoundationweredevelopedusingspaceplate-beamelements.Theenvironmentalloads,suchastheaerodynamicloads,staticwindloads,andwave-currentloads,wereconsidered.Thegeneralstrengthsofthefloatingfoundationwerecalculatedforthenormaloperatingcase（acut-outwindspeedof25ms^（-1）andbladerotationof12rmin^（-1）wereusedtoanalyzethemostunfavorableloads）andanextremecase（windspeedof40ms^（-1）andparkedblades）,andtheweakcomponentsofthestructurewereanalyzed.Theresultsshowthatthefloatingfoundationmeetsthestrengthrequirementsandthestructuralstressishighestwhenthewave,wind,andcurrentareinacollineardirection.Themainandsecondarysupportingbarstransmittheloadsbetweenthestandcolumnsandthetowerfoundation,andtheirstressesarehigherthanthoseintheothercomponents.Intheactualdesign,thesesupportingbarsshouldbestrengthened.Theaerodynamicloadsareveryimportantandshouldbeconsideredinthestructuralstrengthanalysisofthefloatingfoundationandthefloatingwindturbinesystem.

简介：在这份报纸，我们在场深水里的一个点波浪吸收器的全面数字模拟。分析在频率和时间领域被执行。变换器与在举方向的自由的一度是一个二身体的浮点吸收器(FPA)。它的二部分被一个线性mass-spring-damper系统连接。在这研究使用的商业ANSYS-AQWA软件表现很好在考虑确认。速度潜力被假定不可压缩、无旋的流动获得。因此，我们在精力变换和设备效率上调查了波浪特征的效果，包括波浪高度和波浪时期，以及设备直径，草稿，几何学，和抑制系数。验证模型，我们从类似的实验把我们的数字结果与那些作比较。当考虑特定的条件时，我们的学习结果能清楚地帮助最大化变换器效率。