全射流喷头内部流场计算流体动力学数值模拟

20051036103CFD,CFD,CFD35%,5%CFD,::O35112;S27719+4:ANumericalSimulationofInnerFlowforCompleteFluidicSprinklerUsingComputationalFluidDynamicsYuanShouqiZhuXingyeLiHongRenZhiyuan(JiangsuUniversity)AbstractMathematicalmodelfortheinnerflowofcompletefluidicsprinklerwasestablishedbyusingcomputationalfluiddynamics.Computationalfluiddynamicsmethodwasappliedtocalculatetherelationshipbetweenfluxandworkingpressureandalsocalculatethepositionoflean2wall.Thecalculatedresultswerecomparedwiththetestresults.Itshowedthattheaverageerrorwaslessthan5%betweenthecalculatedresultsandthetestresults.Accordingtothecalculation,theve2locitydistributionoftheinnerflowforthecompletefluidicsprinklerwasestablishedinthecondi2tionbothstraightflowandlean2wallflow.KeywordsCompletefluidicsprinkler,CFD,Numericalsimulation,Innerflow:200505263863(:2004AA2Z4010),212013,,,1980PSPSBZ,PSF,:(FDM)(FVM)(FEM)(FAM),CFD(computationalfluiddynamics)CFD,CFDFLUENT1CFDCFD,,,,,CFD111,,5(AkQkA)ö5t+¨(QkAkukA)=#kA(1)AkQk5ukö5t+AkQk(uk¨)uk=-Ak¨Pk+¨Ak(S+Sk)+AkQkg+uk1#k+M1k-¨AkS1(2)AkQk5Hk5t+AkQk(uk¨)Hk=-¨Ak(q+qkt)+AkDköDtPk+Hkt#k+qnk1A1+5k(3)k=LG,Ak#,kgöm2S,Nöm2H,kJökgq,kJöm25,kgöm2112,RNGkE,(k)5(Quik)5xj=55xjBkLeff5k5xj+LtS2-QE(4)Leff=L+LtS=22SijSijLeffBkk(E)5(QuiE)5xi=55xjAELeff5E5xi+C1ELtS2Ek-C2EQE2k-R(5)AEERRR=CLQG3(1-GöG0)1+BG3E2kG=SköEG0=4138B=01012CL=010845C1E=1142C2E=1168Bk=AE=11391131311Fig.1Two2dimensionmodelab,;cd,,1011325kPa;efC,,1011325kPa;,;,1011325kPa2,CFD,,,,,FLUENTSIMPLESIM2PLECPISO3SIMPLE,7410:320055PSF6(PSF10PSF15PSF20PSF30PSF40PSF50),,3,015m3,,,,JBöT7867199744112PSF10PSF15PSF20CFD,CFD1CFDCFD,1:CFD32CFDFig.2ComparisonbetweenCFDmodelingandmeasuringonpressureandfluxcharacteristics1CFDTab.1ComparisonbetweenCFDmodelingandmeasuringonthefunctionofsprinklerfluxandpressureCFDö%PSF10Q=11825H015598Q=117486H015788414PSF15Q=412784H015482Q=41162H015026218PSF20Q=711098H01515Q=712279H0150261165%,CFD,CFD4123PSF100198töh013MPa,,CFD:,,23CFD,,CFD,2:5%,CFD3PSF10Fig.3VelocitydistributionforsprinklertypedPSF10intheconditionoflean2wall2CFDTab.2ComparisonbetweenCFDmodelingandmeasuringonthepositionofsprinklerlean-wallömmCFDö%PSF107127154PSF1510151012219PSF201218131441541312,CFD,PSF10013MPa,0198töh,CFD(4)(3),,8420054PSF10Fig.4VelocitydistributionforsprinklertypedPSF10intheconditionofstraightflow,C,,,,,,5CFD,,CFD35%,5%,CFD1.CFD.:,2004.2..:,2001.3,,.FLUENT.:,2004.4,..:,1998.5..:,1995.6AndersonJD.Computationalfluiddynamics:thebasicswithapplications.:,2004.7,,..,2005,21(3):12168VersteegHK,MallasekeraW.Anintroductiontocomputationalfluiddynamics:thefinitevolumemethod.Wiley,NewYork,1995.9YakhotV,OrzagSA.Renormalizationgroupanalysisofturbulence:basictheory.JournalofScientificComputing,1986,1(1):31110JBöT78671997(19)1..:,1998.2.AMT:[].:,2003.3..:,1992.9410: