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1、Seediscussions,stats,andauthorprofilesforthispublicationat:https://www.researchgate.net/publication/236656459Experimentalstudyon?owbehavioratopenchannelcon?uencesArticleinFrontiersofArchitectureandCivilEngineeringinChina·May2007DOI:10.1007/s11709-007-
2、0025-zCITATIONSREADS171614authors,including:XiaoYeWangL.Wei-ZhenCityUniversityofHongKong167PUBLICATIONS3,420CITATIONS145PUBLICATIONS2,883CITATIONSSEEPROFILESEEPROFILEAllcontentfollowingthispagewasuploadedbyL.Wei-Zhenon11June2015.Theuserhasrequestedenh
3、ancementofthedownloadedfile.第38卷第2期四川大學學報(工程科學版)Vol.38No.22006年3月JOURNALOFSICHUANUNIVERSITY(ENGINEERINGSCIENCEEDITION)Mar.2006 文章編號:100923087(2006)0220001205明渠水流交匯區(qū)流動特征試驗研究1123王協(xié)康,王憲業(yè),盧偉真,劉同宦(1.四川大學水力學與山區(qū)河流開發(fā)保護國家重點實驗室,四川成都610065;2.香港城市大學建筑系,中國香港;3.長江
4、科學院河流研究所,湖北武漢430010)摘 要:天然河流中存在著大量的主支交匯河流,在干支流交匯處,水流結構變得十分復雜。通過水槽試驗,應用聲速多普勒測速儀(ADV),觀測了入?yún)R角為30°時,支流斜接主流入?yún)R型河道的三維水流結構。試驗表明:入?yún)R上游受支流頂托影響,產(chǎn)生一定的壅水,出現(xiàn)低速區(qū),而對側由于束水作用產(chǎn)生高速區(qū)。在入?yún)R一側下游較短的距離,產(chǎn)生回流現(xiàn)象,并形成分離區(qū),而在下游一定范圍內(nèi),靠支流入?yún)R側出現(xiàn)水流高速區(qū),并形成二次流結構。交匯區(qū)水流流動主要有水流分離區(qū)、高流速帶、低流速帶及剪切面等
5、。關鍵詞:交匯水流;水流結構;聲速多普勒測速儀中圖分類號:TV133文獻標識碼:AExperimentalStudyonFlowStructureatOpenChannelConfluences1123WANGXie2kang,WANGXian2ye,LUWei2zhen,LIUTong2huan(1.StateKeyLab.ofHydraulicsandMountainRiverEng.,SichuanUniv.,Chengdu610065,China;2.Dept.ofBuildingandC
6、onstruction,CityUniv.ofHongKong,HongKong,China;3.YangtzeRiverScientificResearchInst.,Wuhan430010,China)Abstract:Channelconfluencesarecommoninnaturalriversandmanyhydraulicengineeringprojects.Theflowstructureatconfluencesbecomeverycomplexbecauseoftheint
7、eractionbetweentributaryandMainRiver.Theexperimentswereperformedinacombinedflumewith30°anglebetweenmainandtributaryflumelocatedatSichuanUniversity.Theveloc2itywasmeasuredusingathree2componentAcousticDopplerVelocimeter(ADV)overagriddefinedthroughoutthe
8、junc2tionregion.Basedontheanalysisofthevelocityatconfluence,thedistinctivecharacteristicsofachannelconfluenceflowmaybedividedintoseveralzonesincludingazoneofseparationimmediatelydownstreamofthejunctionbranchchannel,amaximumandminimumvelocityre
