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1、南水北调东线工程双王城水库泵站水流特性试验与数值模拟研究水利水电技术第41卷2010年第儿期南水北调东线工程双王城水库泵站水流特性试验与数值模拟研究李传奇,龚洁,赵新来,侯贵兵(山东大学土建与水利学院,山东济南250061)摘要:本文结合南水北调东线工程双王城水库泵站的设计,利用水工模型试验和数值模拟相结合的方法,综合分析了泵站流道内的水流流态,压力分布等重要流场特性.研究表明,模型试验与数值模拟结果能够较好的吻合,数值模拟结果能够对模型试验数据提供补充和完善;入库泵站与出库涵洞组合布置方案在水动力学条件方面可行;原设计方案出库涵洞陡坡段存在负压
2、,水流流态不稳.修改方案将出库涵洞节制闸放置在涵洞末端,可有效地解决负压问题,改善出库水流流态.模型试验及数值模拟结果为工程设计提供了科学的依据.关键词:南水北调东线工程;双王城水库泵站;水流特性试验;入库泵站;出库涵洞;物理模型;数值模拟;负压中图分类号:TV675(252)文献标识码:B文章编号:1000—0860(2010)11—0029—05ExperimentandnumericalsimulationstudyonflowcharacteristicsofPumpingStationofShuangwangchengReservoir
3、forEastRouteofSouth--to?-NorthWaterTransferProjectLIChuanqi,GONGJie,ZHAOXinlai,HOUGuibing(SchoolofCivilEngineering,ShandongUniversity,Jinan250061,Shandong,China)Abstract:BasedonthedesignofthePumpingStationofShuangwangehengReservoirfortheEastRouteoftheSouth—to—NorthWaterTransf
4、erProject,theimportantcharacteristicsofflowfieldsuchastheflowpattern,pressuredistributionintheflowpas—sageofthepumpingstationarecomprehensivelyanalyzedwiththemethodofthecombinationofboththehydraulicmodeltestandnumericalsimulation.Thestudyshowsthattheresultofthemodeltestcoinci
5、deswellwiththatofthenumericalsimulation;i.e.theresultofthenumericalsimulationcancomplementandimprovethedatafromthemodeltest.Therefore,thecombinedlayoutofreservoir—inflowpumpingstationwithreservoirOutflowculvertisfeasibleintheaspectofthehydrodynamiccondition.Further—more,asthe
6、negativepressureisthereinthesteep-slopesectionofthereservoiroutflowculvertwithunstableflowpatternintheoriginaldesignscheme,theregulatinggateisarrangedattheendoftheculvert.Inthisway,theproblemsfromthenegativepres—surecanbeeffectivelysolvedwiththeimprovementofthepatternoftheout
7、flow.Generally,theresultsofboththemodeltestandnumericalsimulationcanlayascientificbasisfortheengineeringconcerned.Keywords:EastRouteofSouth—to—NorthWaterTransferProject;PumpingStationofShuangwangchengReservoir;experimentofflowcharacteristics;reservoirinflowpumpingstation;rese
8、rvoiroutflowculvert;physicalmodel;numericalsimulation;negativepressu
