Page 146 - 《水资源与水工程学报》2023年第2期
P. 146
!34 " ! 2 # & ' ( ) & * + , - Vol.34No.2
2023 $ 4 % JournalofWaterResources&WaterEngineering Apr.,2023
DOI:10.11705/j.issn.1672-643X.2023.02.18
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GHIJK:TV653 .1;TV135.2 LMNOP:A LQRK:1672643X(2023)02014207
Numericalsimulationofhydrauliccharacteristicsofpier-fencejoint
dissipatorsinunderflowdissipationbasins
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ZHOUKai ,MUZhenwei ,ZHOUZhen ,ZHAOQian
(1.CollegeofHydraulicandCivilEngineering,XinjiangAgriculturalUniversity,Urumqi830052,China;2.XinjiangKey
LaboratoryofHydraulicEngineeringSafetyandWaterDisasterPrevention ,Urumqi830052,China)
Abstract:Toaddresstheproblemsofinsufficientenergydissipation,turbulentflowpatternsandunstable
damagecausedbyexcessivedynamicwaterpressureonthebottomplateofunderflowdissipationbasins
withlowFroudenumber,theconventionaldissipationpoolswereequippedwithjointauxiliaryenergydis
sipatorssuchastoepier-suspendedfence,dissipationpier-suspendedfence,Tshapedpier-suspen
dedfence ,thenthehydrauliccharacteristicsandenergydissipationlawofeachjointauxiliaryenergydis
sipatorwasanalyzedusingnumericalsimulationmethod.Theresultsshowthatafterthearrangementof
thejointauxiliaryenergydissipatorsinthedissipationbasin ,thewatersurfaceflowpatterntendstobe
smoothercomparedwiththeconventionaldissipationbasin,themaximum hourlymeandynamicwater
pressureonthebottomplateoftheunderflowdissipationbasinisdecreasedby50%,25% and12.5%,
andtheenergydissipationrateisincreasedby3.13%,6.06% and5.24%,respectively;compared
withthesamepiertypedissipationbasin (withoutsuspendedfence),themaximumhourlymeandynamic
waterpressureonthebottomplateofthedissipationbasinisreducedby20%,25% and12.5%,and
theenergydissipationrateisincreasedby0.17%,3.05% and0.39%,respectively.Itisconcluded
thatthecombineduseofauxiliaryenergydissipaorsoftoepiers ,dissipationpiers,Tshapedpiersand
suspendedfencehasasuperpositionofadvantages ,andthestudycanprovideanewwayofthinkingfor
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