后弯管浮体式波力发电装置分析word格式论文.docxVIP

后弯管浮体式波力发电装置研究摘要后弯管浮体式波力发电装置作为一种离岸的振荡水柱式波力发电装置，既具有振荡水柱式波力发电装置可靠性强、适应性强、安装和维护方便的特点，也具有离岸式波力发电装置工作地点灵活的优势。对此类波力发电装置进行全面的研究，可为开发设计更为高效的波力发电装置提供指导，对解决日益严峻的能源和环境问题具有重要意义。本文以考察此类装置气室内水柱振荡情况为重点，通过水工物理模型试验和数值模拟两种方法系统分析了入射波参量和装置形状参量对装置捕能效果的影响。通过水工物理模型试验，发现了气室内水柱振荡同入射波波高和入射波周期之间的关系，考察了气室完全开敞、输气管添加负载以及弯管横管长度在不同入射波高和周期下对气室内水柱振荡的影响。试验结果表明，气室内水柱振荡受入射波波高、入射波周期、输气管负载及横管长度影响明显。此类装置更适合在大周期、大波高的海况下工作。减少输气管负载，合理确定横管长度能够有效提升装置的工作性能。基于Flow-3D软件，构建了三维数值波浪水槽。该水槽模拟的波浪波高、周期、波长同理论值基本一致。通过数值模拟，考察了气室截面宽度和横管截面宽度对气室捕能效果的影响。分析数据表明，增加横管截面的宽度能够有效提升气室的捕能效果，而增加气室截面宽度对其则有负面影响。关键词：后弯管，波力发电，振荡水柱，物理模型试验，数值模拟分析StudyonBackwardBendDuetBuoyWaveEnergyConverter AbstractAsoneofoffshore,oscillatingwatercolumnwaveenergyconverters,Backward BendDuetBuoy(BBDB)WaveEnergyConverterhassignificantadvantageswithinthe characteristicsofreliability,adaptability,convenienceforinstallationmaintenance.The investigationofBBDBwaveenergyconvertercanprovidetheguidancetotheresearch anddesignofhighlyefficientwaveenergyconvertingandutilizingsystem,whichisalso extremelyimportanttofacingsevereenergyandenvironmentalcrisis.Thefocusofthis thesisistostudywatercolumnoscillationperformanceinBBDBairchamber.Focusing oneffectsofincidentwaveparametersanddeviceshapeparametersofthedevices,it systematicallyanalyzesthroughphysicalmodeltestsandnumerical simulationonenergy capturingof BBDB.Basedonphysicalmodeltests,therelationshipbetweenwatercolumnoscillationin thechamberandincidentwaveheightaswellasincidentwaveperiodhasbeenstudied, theinfluenceoftop-openchamber,addingofair-ductandelbowhorizontallengthin differentincidentwaveheightandperiodtowatercolumnoscillationinthegas chamber. Suchdevicesaremoresuitabletooperateintheconditionofprototype,largewave heightsandperiods.Itwilleffectivelyimprovetheperformanceofthedevice,which derivedfromreducingthegaspipelines’loadandfixthereasonablelengthofthe horizontaltube.Athree-dimensionalnumericalwaveflumewasestablishedbasedonFlow-3D software.Thegeneratedwaveheight,waveperiodandwavelengthagreedwellwiththe theoretica