Page 128 - 《水资源与水工程学报》2022年第2期
P. 128
!33 " ! 2 # & ' ( ) & * + , - Vol.33No.2
2022 $ 4 % JournalofWaterResources&WaterEngineering Apr.,2022
DOI:10.11705/j.issn.1672-643X.2022.02.16
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HIAJK:TV698.1 6 LMNOP:A LQRK:1672643X(2022)02012406
Flowstructurecharacteristicsandextremevelocitypredictionmethodinthe
downstream entranceareaofthenavigationlock
QIChunfeng,PENGWei,OUYANGQun’an,PUXiaogang
(KeyLaboratoryofEngineeringSediment,TianjinResearchInstituteforWaterTransportEngineering,
MinistryofTransport,Tianjin300456,China)
Abstract:Inordertoclarifythecharacteristicsoftheflowstructureinthedownstreamentranceareaofthe
navigationlock,soastorealizethequantitativepredictionofthenavigableflowconditions,anumerical
simulationmethodwasusedtocarryoutthecalculationofthenavigableflowconditionsbasedonthegener
alizedmodeloftheentrancearea.Meanwhile ,theflowstructurecharacteristicsandflowconditiondistribu
tionlawintheentranceareawereanalyzed.Basedonthesensitivityanalysisoftheinflowvelocity,inflow
angle ,andgeometricparametersoftheentrancearea,apredictionformulafortheextremevelocityinthe
downstreamentranceareaofthenavigationlockwasproposed.Theresultsshowthattheflowstructuresin
thedownstreamentranceareaofthenavigationlockisinatwodimensionalformandthepredictionformula
fortheextremevelocityobtainedbytheregressionanalysisisreliableaccordingtotheverificationresultsof
theactualmeasureddataofthespecificengineeringmodel.Theproposedpredictionformulaisconvenient
andefficient ,whichprovidesanewapproachtothepredictionofnavigableflowconditionsinthedown
streamentranceareaofsimilarnavigationlocks.
Keywords:navigationlock;entrancearea;flowstructure;navigationcondition;WuqiangxiWaterConser
vancyComplex
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