167喷雾除尘雾化喷嘴流场仿真与分析戚厚保

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CoalMineMachineryVol.32No.04Apr.201132042011040、,,,,,。,、、。,。,,Fluent,,。11.11。,。。1d.α.γ.d1.1.2(1),,,p1γ1+v122gn=p2γ2+v222gn(1)p1、p2———;v1、v2———;γ1、γ2———。γ1=γ2=γ,(1)v2=2gn(p1-p2)γ1-(d2d1)4姨(2)p1≥p2,(2)v2=44.7p1姨(3)(2),k-ε,Eulerian。,2。k-ε坠坠t(ρk)+坠坠xi(ρkui)=坠坠xj[(u+utσk)坠k坠xj]+Gk+Gb-ρε-YM+Sk坠坠t(ρε)+坠坠xi(ρεui)=,,,,(,221116):。,Fluent,。,,。:;;Fluent;:TD714:A:1003-0794(2011)04-0092-03SimulationandAnalysisofSprayNozzleforDustRemovalQIHou-bai,ZHAOJi-yun,XUZhan,ZHANGDe-sheng,WANGZhen-xing(SchoolofMechanicalandElectricalEngineering,ChinaUniversityofMiningandTechnology,Xuzhou221116,China)Abstract:Sprayingdustremovalisthewidelyusedmethodofminedustremoval.Inordertofurtherstudytheincidentwaterpressureonthenozzleflowfieldandtheeffectofatomizationeffect.Theinternalflowfieldofdrect-typenozzelunderdifferentincidentwaterpressuresweresimulatedbyFLUENT,obtainingthedistributionofthepressurefield,velocityfieldandliquidwaterinthenozzel.Itispointedoutthatthehighertheincidentwaterpressure,thebetteratomizationeffect.Keywords:flowfield;nozzle;Fluent;two-phaseflowαγdd1923204Vol.32No.04———,坠坠xj[(u+utσε)坠ε坠xj]+C1εεk(Gk+C3εGb)-C2ερε2k+SεGk———;Gb———;YM———。ut=ρCuk2εFluentC1ε=1.44,C2ε=1.92,Cu=0.99,σk=1.0,σε=1.3。2CFD1。1,,FluentGambit,,Quad/Tri,Map,0.1。2。3,AB2,BC、CD、DE、EF、FG,GH1,HI、IJ,AJ。23310MPa、15MPa、20MPa,,。4~7。4、5,,2。15mm,。35mm,,。6,(3),2。/mm41.20MPa2.15MPa3.10MPa/mm51.20MPa2.15MPa3.10MPa/mm61.20MPa2.15MPa3.10MPa22,,。710MPa、15MPa、20MPa。7,20MPa,,。(a)10MPa(b)15MPa(c)20MPa7d1/mm2α/(°)60γ/(°)45/MPa/m·s-1/m·s-110141.35140.0715173.12177.3520199.91201.56HGBACDFEIJ/MPa2.00e+071.75e+071.50e+071.25e+071.00e+077.50e+065.00e+062.50e+060.00e+06-2.50e+061231020304050600/%1.00e+009.95e-019.90e-019.85e-019.80e-019.75e-019.70e-019.65e-019.60e-011231020304050600/m·s-12.20e+022.00e+021.80e+021.60e+021.40e+021.20e+021.00e+028.00e+016.00e+014.00e+012.00e+010.00e+001231020304050600934(1)FluentEulerian,;(2)10MPa、15MPa、20MPa,20MPa;(3),。:[1],.[J].(),2009(9):22-24.[2],,,.FLUENT[J].,2008(4):49-52.[3],,,.[J].,2006(12):122-126.[4].[M].:,2004.[5],,,.[J].,2008,29(5):15-17.:(1985-),,,,,:qihoubao@126.com.::2010-11-02!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!CoalMineMachineryVol.32No.04Apr.201132042011041(1)。,,50~300mm,α1=28°,φ=23°,()v=5m/s,,,3,,。,,,[5],、50~300mm,α1=27°,[1]20-4,7%、50mm,26°+1°=27°,φ=23°,D=3m,f=0.35,v=4.2m/s,[4],:α1=28°,φ=23°,D=3m,v=5m/s,α1.1=15°,φ=23°,1,3,。:α1=27°,φ=23°,D=3m,v=4.2m/s,α1.1=14°,φ=23°,1,7,。,。[1]。①,,,(,250031):,,,。。:;;;:TD52:A:1003-0794(2011)04-0094-03DiscussionsonFirmforOutsideSpiralAngleofSpiralChuteBasePlateDONGGuang-qi,JIANGShou-yong,MAMing-yan,LIYong-bin(JinanDesignandResearchInstituteCo.,Ltd.,CoalIndustry,Jinan250031,China)Abstract:Theproblemsabouttheoutsidespiralangleofspiralchutebaseplateexistedinrelatedreferencesarediscussed.Especially,thefeedingspeedisdeterminedbytechnicalstaffandnotbytheorycalculation,themethodarepresentedtocomparewiththedomesticexamples.Thespeedreducerdischargeisnecessary,andtheanalysisispresented.Keywords:outsidespiralangleofspiralchutebaseplate;firm;problem;discussion94

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