Page 111 - 《水资源与水工程学报》2023年第2期
P. 111
!34 " ! 2 # & ' ( ) & * + , - Vol.34No.2
2023 $ 4 % JournalofWaterResources&WaterEngineering Apr.,2023
DOI:10.11705/j.issn.1672-643X.2023.02.13
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GHIJK:TV135.2 LMNOP:A LQRK:1672643X(2023)02010707
Optimizationofenergydissipationrateparametersof
steppedspillwaysbasedonSPH
1,2,3
1
1,2,3
1
WUHaitao ,ZHENGWengang,TIANLirong ,GAORenzu,GUShenglong 1,2,3
(1.SchoolofWaterResourcesandElectricPower,QinghaiUniversity,Xining810016,China;2.Laboratoryof
EcologicalProtectionandHighQualityDevelopmentintheUpperYellowRiver ,Xining810016,China;
3.KeyLaboratoryofWaterEcologyRemediationandProtectionatHeadwaterRegionsof
BigRivers,MinistryofWaterResources,Xining810016,China)
Abstract:TheflowcharacteristicsofthesteppedspillwayissimulatedbyDualSPHysicsinordertostudy
theenergydissipationlawandfindtheoptimalparametersofthesteppedspillway.Here,theapplicability
andaccuracyofthesmoothedparticlehydrodynamics(SPH)methodinthewaterflowsimulationofthe
steppedspillwayisverifiedthroughcomparativeanalysis.Then,theenergydissipationlawofthestepped
spillwayisstudiedbyestablishingatotalof288workingconditionswithdifferentsinglewidthflowrates ,
stagegradientsandthenumberofsteps.Theresultsshowthattheenergydissipationrateofthestepped
spillwayisnegativelycorrelatedwiththesinglewidthflowratewhentheotherparametersareconstant;
thenumberofstepshasnosignificanteffectontheenergydissipationrateofthesteppedspillway,but
thereisacertainstepnumberwhentheenergydissipationrateofthesteppedspillwayreachesthemaxi
mumvalue.Accordingtothesimulationresults ,thenumberofstepscorrespondingtotheoptimalenergy
dissipationrateisintherangeof78-81steps.Thisconclusionhasacertainreferentialvalueforthe
practicalengineering.
Keywords:steppedspillway;optimalenergydissipationrate;smoothedparticlehydrodynamics(SPH);
numericalsimulation
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