Page 59 - 2024年第55卷第6期
P. 59
[23] 牟献友,乔春林,冀鸿兰,等.桥墩上环翼型防冲板和开缝组合新型防护试验研究[J].水力发电学报,
2017,36(4):26 - 37.
[24] 方森松.连续布置墩台周围水流特性研究[D].长沙:长沙理工大学,2011.
[25] 何小花,陈立,王鑫,等.墩台紊流宽度的试验研究[J].水利水运工程学报,2006(3):49 - 53.
[26] 胡旭跃,祖小勇,程永舟,等.圆端形墩台侧向紊流宽度的试验研究[J].水利水运工程学报,2009(3):
8 - 13.
[27] KUMARV,KGRRAJU N- VITTAL.Reductionoflocalscouraroundbridgepiersusingslotsandcollars[J].
JournalofHydraulicEngineering ,1999,125(12):1302 - 1305.
Threedimensionalnumericalanalysisofhydrodynamiccharacteristicsof
circularpierandabutmentwakewithslitcontrol
3
1,2
1,2
1,2
1,4
LIDongfeng ,BAIFuqing ,FANGZhihao ,ZHANGHongwu,HUJianyong
(1.KeyLaboratoryforTechnologyinRuralWaterManagementofZhejiangProvince,ZhejiangUniversityof
WaterResourcesandElectricPower,Hangzhou 310018,China;
2.SchoolofNavalArchitectureandMaritime,ZhejiangOceanUniversity,Zhoushan 316022,China;
3.StateKeyLaboratoryofHydroscienceandEngineering,TsinghuaUniversity,Beijing 100084,China;
4.SchoolofMarineEngineeringEquipment,ZhejiangOceanUniversity,Zhoushan 316022,China)
Abstract:Waterflowsaroundhydraulicstructuressuchasgatepiersanddiversionpiers,itresultsinvortexsepa
ratedflow.Thethree - dimensionalwakestructurehascomplexhydrodynamiccharacteristics ,andflowcontrolof
vortexseparatedflowisnotonlynecessaryfortheoptimizationdesignofgatepiers ,butalsorelatedtotheefficiency
andsafetyofengineeringoperation.Onthebasisofverifyingthethree - dimensionalhydrodynamicmathematical
model ,thisarticlestudiesthethree - dimensionalhydrodynamiccharacteristicsofvortexseparationflowandflow
controlafterthecircularendpierisslotted.Itcomparesthetime - averagedvelocitydistribution ,turbulentflowen
ergy ,andturbulenceintensitydistributioninthelongitudinal,transverse,andverticaldirectionsundertheseam
lessandslottedpierschemes ,andexploresthehydrodynamiccharacteristicsoftheslottedpier.Analysisshows
thatthewaterflowstructurebehindthepiercanbesignificantlyimprovedaftertheopeningofthepier.Thecloser
theopeningpositionistothemiddleofthewaterdepth ,thegreaterthesuppressionofthewakevortexbehindthe
pier,andthebetterthecontroloftheflowaroundthepier.Theopeningofthemiddlepositionofthewaterdepth
greatlyaffectstheupperandlowerwaterflowbehindtheslottedpier ,makingtheopeningthemostinfluentialon
thetime - averagedflowvelocity ,andtheopeningalsohasthegreatestandbestsuppressiononthevortex.Tosup
presstheadverseeffectsofvorticesbehindthepiersontheproject ,thewaterdepthbehindthepiersandabutments
shouldbedeterminedfirstinthedesignoftheproject ,andtheopeningpositionshouldbesetasmuchaspossible
inthemiddleofthewaterdepthbehindthepiersandabutments.
Keywords:roundendpierandabutment;fluidflow slitcontrol;turbulentkineticenergy; vortexseparation
flow ;threedimensionalnumericalanalysis
(责任编辑:李福田)
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