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Multi - objectiveoptimizationstudyofflowfieldcharacteristicsin
forwardintakestructureofpumpingstation
3
2
2
2
1,2
XUCundong ,HUXiaomeng,WANGRongrong,WANGXin,TIANJunjiao
(1.ZhejiangUniversityofWaterResourcesandElectricPower,Hangzhou 310018,China;
2.SchoolofWaterConservancy,NorthChinaUniversityofWaterResourcesandElectricPower,Zhengzhou 450046,China;
3.SchoolofCivilEngineeringandArchitecture,HenanUniversity,Kaifeng 475004,China)
Abstract:Toimprovethestabilityoftheflowfieldintheintakestructureofthesand - ladenpumpingstationinthe
YellowRiverIrrigationDistrict,thedesignparametersoftheintakestructureoftheprototypepumpingstation(be
foresedimentdeposition )arecoupled,andsynergisticallyoptimized.A typicalpositiveinletpumpingstationin
JingdianirrigationareaofGansuProvinceisselectedastheresearchobject ,theflowfieldcharacteristicsevaluation
indexesandinletstructuredesignparametersaredetermined ,thePSO - BPNN - MIGAcoupledoptimizationmodel
isconstructedbasedonsimulationintelligentalgorithm (PSO - BPNN)andmulti - islandgeneticalgorithm (MI
GA ),andtheoptimalsolutionisoptimizedbyRealizablek - εturbulencemodelcoupledwiththeinter - phaseslip
consideration.TheoptimalsolutionissimulatedbytheRealizableturbulencemodelcoupledwiththeMixturemulti
phaseflowmodelconsideringtheinterphaseslip.Theoptimaldesignscheme (OPT)obtainedfromthecoupledop
timizationmodelis :diffusionangleθ = 26.30° ,totalwidthB= 26.46m ,bottom longitudinalslopei = 1∶2.3 ,
=
overhangheightC = 1.05m ,inundationdepthh s 1.38m ,backwalldistanceT = 0.57m ;thedeviationratesof
thepredictedandcalculatedvaluesoftheOPTschemeevaluationindexesarewithin10.00%.Thereisnoobvious
vortexbackflowareaintheinletstructureofthepumpingstationunderOPTscheme,andthesedimentsiltationin
tensityandsiltationrangearesignificantlyreduced ,theflowvelocityissmallerandtheflowlineismoreuniform.
Theoptimizationmodelismorereliableinthecoordinatedoptimizationoftheprototypeintakestructureofthepum
pingstation ,andcanrealizetheglobalcontinuousoptimizationintheparameterinterval,andtheoveralloptimiza
tioneffectoftheobtainedoptimalschemeisgood.Theresearchideasandmethodsproposedinthispapercanpro
videreferencemethodsforthecollaborativeoptimizationofsimilarpumpingstationengineeringdesignparameters
coupling.
Keywords:forwardintakestructure;flowfieldcharacteristics;PSO - BPNNalgorithm;MIGAalgorithm;multi -
objectiveoptimization ;numericalsimulation
(责任编辑:王 婧)
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