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                            Studyonoptimizationofthesideinlet?outletwiththecomplextunnel
                                         layoutinapumpedstoragepowerstation

                                    GAOXueping,LUOChang,ZHUHongtao,LIUYinzhu
                        (StateKeyLaboratoryofHydraulicEngineeringIntelligentConstructionandOperation,Tianjin 300072,China)


                  Abstract:Sometimes,itischallengingtoavoidthesideinlet?outletofapumpedstoragepowerstationthatcon
                  nectsthetunnelwithacomplexlayout.Whenthedistancebetweenthetwoisclose ,thereisaseriousbiasflow
                  phenomenonoftheinlet?outletundertheoutflowcondition,whichleadstotheunevendistributionofthevelocityof
                  thetrashracksectionandtheunevendistributionoftheorificeflow.However,duetothelimitationoftopographic
                  andgeologicalconditionsinpracticalengineering,theadjustablerangeoftunnelswithcomplexlayoutislimited,
                  whichbringsgreatdifficultytotheoptimizationofhydraulicdesignofinlet?outlet.Inordertosolvethehydraulic
                  problemswhentheinlet?outletwiththecomplextunnellayout ,thispaperusesthenumericalsimulationmethodto
                  studythehydrauliccharacteristicsoftheinlet?outletwiththecomplextunnellayout ,andputsforwardthecorre
                  spondingoptimizationmethod.Theresultsshowthatwhentheinlet?outletwiththecomplextunnellayout ,theori
                  ficeflowratiooftheoutflowconditionexceedstherangeof0.9 - 1.1 ,andthenon - uniformitycoefficientoftheflow
                  velocityofthetrashracksectionisgreaterthan2.Undertheconditionofnotchangingthelayoutofthetunnel ,an
                  optimizationmethodisproposed ,thatis,orificeflowdistributionisimprovedbyreducingtheretreatdistanceof
                  themiddlepartitionwall ,andtheflowvelocitydistributionofthetrashracksectionisimprovedbyadjustingthe
                  bottomslopeoftheinlet?outlet.Theinfluencerangeofthecomplextunnellayoutisfurtheranalyzed ,anditisde
                  terminedthatwhenthedistancebetweenthecomplextunnellayoutandtheinlet?outletislessthan20D ,itsinflu
                  enceonthehydrauliccharacteristicsoftheinlet?outletshouldbeconsidered.Theresearchresultscanprovideguid
                  ancefortheshapedesignandoptimizationoftheinlet?outletofpumpedstoragepowerstation.
                  Keywords:pumpedstoragepowerstation;sideinlet?outlet;tunnelwithcomplexlayout;velocitydistributionof
                  trashracksection ;flowdistribution;numericalsimulation


                                                                                    (责任编辑:韩 昆)


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