文档名：Flow Resistance Characteristics of Rotary Ribbed Channels
Abstract：Withthedevelopmentofaero-engines,theturbineinlettemperaturecontinuestorise.Inordertoensurethesafetyandreliabilityoftheturbineblades,coolingstructuresmustbesetinsideturbinebladestocoolthem.Heattransfercoefficientandflowresistancearethekeyparameterstomeasurethecoolingcharacteristicsofinternalcoolingstructures.Inthispaper,thecharacteristicsofflowresistanceinarotatingribbedchannelispresentednumericalsimulationunderdifferentribspacings,ribangles,andthermalboundaryconditions.Theresultsshowthat,separationandreattachmentoffluidbetweenribsisthekeyeffectofribspacingonflowresistance.Theflowresistanceissmallwhentheribspacingissmall,becauseit'sdifficultforthefluidtoformreattachmentbetweentheribs.Withtheincreaseofribspacing,thereattachmentphenomenonismoreobviousandtheflowresistanceincreasesaccordingly.Ingeneral,p:e=10channelhasthemaximumflowresistance.Secondaryflowcausedbytheribsisthekeyfactoraffectingtheflowresistancecharacteristicswithdifferentribangles.Thesecondaryflowinteractswiththemainflowandcausesflowlossthroughmixing,thusaffectingtheflowresistanceofthechannel.Understaticcondition,theflowresistanceof60°ribbedchannelisthelargest.Theflowresistanceofchannelwasaffectedbythetemperatureriseratioalso.AndwiththeincreaseoftheRo,thetemperatureriseratiohasamoreobviouseffectontheflowresistanceoftheribbedchannel.WhenRo=0.45,theflowresistanceofthechannelwithatemperatureriseratioof0.4is2.4timesthatofthechannelwithouttemperaturerise,whilewhenRo=0.3,itis1.6times,andwhenRo=0.15,itis1.2times.
作者：Ru-quanYou Yun-tengXu Hai-wangLi Author：Ru-quanYou Yun-tengXu Hai-wangLi
作者单位：NationalKeyLaboratoryofScienceandTechnologyonAeroEnginesAero-thermodynamics,BeihangUniversity;ResearchInstituteofAero-Engine,BeihangUniversity;AdvancedJetPropulsionInnovationCenter,AEAC;TianmushanLaboratoryNationalKeyLaboratoryofScienceandTechnologyonAeroEnginesAero-thermodynamics,BeihangUniversity;ResearchInstituteofAero-Engine,BeihangUniversityNationalKeyLaboratoryofScienceandTechnologyonAeroEnginesAero-thermodynamics,BeihangUniversity;ResearchInstituteofAero-Engine,BeihangUniversity;TianmushanLaboratory
刊名：风机技术
Journal：Compressor,Blower&FanTechnology
年，卷(期)：2024, 66(2)
分类号：
Keywords：BladeCooling RibbedPassage Rotation FlowResistanceCharacteristics
机标分类号：SO241.3P228.4
在线出版日期：2024年5月21日
基金项目：FlowResistanceCharacteristicsofRotaryRibbedChannels[
期刊论文] 风机技术--2024, 66(2)Ru-quanYou Yun-tengXu Hai-wangLiWiththedevelopmentofaero-engines,theturbineinlettemperaturecontinuestorise.Inordertoensurethesafetyandreliabilityoftheturbineblades,coolingstructuresmustbesetinsideturbinebl...参考文献和引证文献
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