山西中部引黄取水工程水力特性分析分析

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1、万方数据太原理工大学硕士研究生学位论文forecastingmethodandRBFneuralnetworkpredictionmethod．(2)predictedresultisimprovedcomparedwithBPneuralnetwork，deviationreduced，convergencetimesignificantlyreducedaftercombiningtheBPneuralnetworkandRBFneuralnetwork．(2)thenetworkstructureinpredictionofpredictionprog

2、rambasedonMATLABplatformisamoresatisfactorynetworkstructurethatcanbetrainedbeforethepaperiscompleted．Duetosomeweightsoftheneuralnetworkarerandomparametersgivenbycomputer,whicharedifferentineachtraining，afterobtainingthesatisfactorypredictedresultswithsmalldeviation，theweightsofthen

3、etworkatthetimeissavedforcallinginlaterengineeringpractice．(3)inthisstudy,archedgatetypesectionisusedintheproject．Processdataofthewaterlevel，flow,velocity,clearanceratioinsidethenopressuretunnelchangewithtimeisanalyzedbyusingcharacteristiclinemethodtosolvecharacteristicequationandt

4、hecorrespondingprocesslineis’drawn．Correspondingrelationshipbetweenflowofthepumpwater-in‘poolandthenumberofsetsturnedonisdetermined．AbandonedwaterofprojectisreducedandconvenedintotunnelclearanceratioaccordingtoTunnelflowareatoensuretheclearanceinprocessofwatertransportationwithinth

5、erequiredsecurityscopeofstandard．CentralYellowRiverdiversionprojectisacomplexsystemproject．Calculationanalysisofopenchannelunsteadyflowincludesmanythings，suchasconnectionissuebetweenopenchannelwithdifferentsections，openandcloseissueofsluicegate，controlandschedulingissueoftheentires

6、ystem．V万方数据太原理工大学硕士研究生学位论文Furtherin—depthstudyisneeded．KEYWORDS：pump，fullcharacteristiccurveprediction，unsteadyflowinopenchanne，CentralYellowRiverDiversionProjectVI万方数据太原理工大学硕士研究生学位论文目录第一章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1研究的目的和意义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．11．2国内外研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．⋯．．．⋯．．31．2．1水泵全

7、特性曲线研究成果：⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．41．2．2水泵全特性曲线预测方法⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．41．2．3明渠非恒定流研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．51．3本文研究的主要内容⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．6第二章供水工程中泵站系统水力计算分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．92．1泵站稳态运行工况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．．．92．1．1泵基本特性曲线与管路曲线⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．92．1．2泵运行工作点的确定⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．⋯．102．2泵站过渡过程计算分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．112．2

8、．1水锤数值计算特征值法⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯