Page 115 - 《水资源与水工程学报》2022年第1期
P. 115

!33 " ! 1 #                       & ' ( ) & * + , -                               Vol.33No.1
               2022 $ 2 %               JournalofWaterResources&WaterEngineering                 Feb.,2022

            DOI:10.11705/j.issn.1672-643X.2022.01.15


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                        Regressionanalysisofheadlosscoefficientofthesurgetank

                                               withaconnectingpipe

                                                    2
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                                      1
                            FENGSiqi,CHENYimin,YANGFei,SUNHongliang,CAIFulin                 1
                      (1.CollegeofWaterConservancyandHydropowerEngineering,HohaiUniversity,Nanjing210098,China;
                              2.PowerChinaHuadongEngineeringCorporationLimited,Hangzhou310014,China)
                 Abstract:Inordertostudytheinfluenceofstructuralparametersandflowconditionsofsurgetankson
                 thelocalheadlosscoefficient ,amultivariatelinearregressionmodelwasestablishedbasedonthemeas
                 ureddataofphysicalmodels.Theregressionequationsforcalculatingtheheadlosscoefficientofthetail
                 racesurgetankwithaconnectingpipewereobtained ,thentheresultsoftheequationswerecompared
                 andanalyzedwiththoseofthehydraulicmodeltest.Theresearchshowsthattheregressionanalysisre
                 sultsareingoodagreementwiththoseofthehydraulicmodeltest,andthecorrespondingregressionequa
                 tionscanwellreflectthechangeableruleoflocalheadlosscoefficientundertheinteractionofdiversion
                 ratio ,pipediameterratioandflowpattern.Sotheseequationshavestrongengineeringapplicabilityand
                 canbeappliedtothecalculationofheadlosscoefficientinthehydraulicdesignofsurgetanks.
                 Keywords:tailracesurgetank;headlosscoefficient;connectingpipe;multivariatelinearregression;
                 regressionmodel
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