商用车空气动力学附加装置减阻技术的研究及应用

JOURNALOFMECHANICALENGINEERING47620113Vol.47No.6Mar.2011DOI10.3901/JME.2011.06.107*1,2122(1.1300252.130011)(Computationalfluiddynamics,CFD)U461.1ResearchandApplicationofAerodynamicDragReductionDevicesonCommercialVehicleWANGXinyu1,2WANGDengfeng1FANShijie2FUQiang2(1.StateKeyLaboratoryofAutomotiveDynamicSimulation,JilinUniversity,Changchun130025;2.R&DCenterFAW,Changchun130011)AbstractReducingaerodynamicdragofcommercialvehicleisanimportantwaytorealizeenergysavingandconsumptionreductionforvehicle.Hereby,allkindsoffactorsinfluencingtheaerodynamicdragofcommercialvehicleareresearchedbyusingcomputationalfluiddynamics(CFD)analysisandwindtunneltest,includingtheinfluenceofdomestyle,distancebetweencabinandloadingplatform,andsideaprons.Accordingtotheaboveresearch,thedragreducingmechanismisanalyzed.Theresearchresultsindicatethatusingvariousaerodynamicdragreductionmeasuresproperlyoncommercialvehiclewithloadingplatformcanreduceaerodynamicdragsignificantly,andrealizeenergysavingandconsumptionreductioneffectively.Alltheproposeddragreductionmeasuresarepracticallyusedintheproducts,andtheireffectivenessofdragreductionandenergysavingisvalidated.KeywordsCommercialvehicleComputationalfluiddynamics(CFD)analysisDragreductionEnergysavingWindtunneltest0*()30%10%[1]*(636)(6)3[2-4][5-9](Computationalfluiddynamics,CFD)FluentCFD8200AA110104200800720100282010092847610811.1CFDCFDCFDCFD2d1dvvpt=(1)0v=i(2)vPRealizablek-Realizablek-Realizablek-kt()()iijkjkkkutxxx+=++bMkkGGYS++(3)t1()()iijjuCStxxx+=++2213bCCCGSkkv+++(4)uitGGbYMC1,C2,C1,C3k,PrandtlSk,S1.214m1m9.8mCFD2FLUENTk-x30m/s12CFD63a3b(300mm100mm)3c3d3a3b3e3f(300mm100mm)3453a3b43ak2011310953b(a)(b)(c)(d)(e)(f)3643a53b1131CFDCd1.0403a0.7343b0.7263c0.7203d0.7003e0.7553f0.7453d32.7%(3e3f)1.3CFD1/76CFD3m3m30m/s0()3c678673c81/7CFD22CFDCd1Cd2e/%1.0401.15810.23a0.7340.65811.63b0.7260.6806.83c0.7200.7281.13d0.7000.6429.03e0.7550.7204.93f55b0.740.709.14761102CFD12%3b3a(3e3f)(3d)44(3c)1.4CFD(3d)(9)94m8m6m2535m/s4m4.5m(1)a1.3457a34.57%(2)(9)033Cdb0.811b18.9(3)10104104m4Cdc0.980c102(4)04m4.5m201131114m114.5m12114.5m4m124.5m517.954mCdd0.821d(5)133212.136350mm35m/s0(9)66l/mm3508501280Cde1.013e1.005e0.00390.004102.235m/s0(9)77Cdf1.020f214761123CFDCFD(1)18.94417.9(2)0(3)(9)90km/h50t3.47L/100km[1].[M].,1998.FULimin.Vehicleaerodynamics[M].BeijingChinaMachinePress,1998.[2].[J].,200022(5)293-295.FANShijie,WANGKaichun.3-DComputationalsimulationonaerodynamiccharacteristiesofaChina-madecar[J].AutomotiveEngineering,2000,22(5)293-295.[3].[J].2010,46(2)69-75.RENJindong,WANGDengfeng,WANGShanpo,etal.Researchondigitalhumanmodelsystemusedforheavycommercialvehicleergonomicdesign[J].JournalofMechanicalEngineering,2010,46(2)69-75.[4],,,.[J].2008,44(1)184-189.HEYibin,GUZhengqi,WUJun,etal.Applicationofthree-equationturbulencemodelinnumericalsimulationofvehicleexternalflowfield[J].ChineseJournalofMechanicalEngineering,2008,44(1)184-189.[5]ENGLARRJ.AdvancedaerodynamicdevicestoImprovetheperformance,economics,handlingandsafetyofheavyvehicles[R].SAE2001-01-2072,2001.[6]CHUNGJ,LEEJ,SUNGB.Windtunneltestofanunmannedaerialvehicle[J].JournalofMechanicalScienceandTechnology,2003,17(5)776-783.[7]WOODRM,BAUERSXS.Simpleandlow-costaerodynamicdragreductiondevicesfortractor-trailertrucks[R].SAE,2003-01-3377,2003.[8]WOODRM.Impactofadvancedaerodynamictechnologyontransportationenergyconsumption[R].SAE,2004-01-1306,2004.[9]KIMC,CHUNGJ.Aerodynamicanalysisoftiltrotorunmannedaerialvehiclewithcomputationalfluiddynamics[J].JournalofMechanicalScienceandTechnology,2006,20(4)[e-mail]()[e-mail]