您好,欢迎访问三七文档
当前位置:首页 > 建筑/环境 > 工程监理 > CFD软件在工程流体数值模拟中的应用
2120043()JournalofNanjingInstituteofTechnology(NaturalScienceEdition)Vol.2,No.1Mar.,2004:1672-2558(2004)01-0062-05CFD:2004-01-03:(1972-),,,.12(1.,,210007;2.,,210013):CFD.FLUENT,,.,,CFD.:CFD;;:O351.2:ANumericalSimulationofEngineeringFluidbyUsingCFDSoftwarePANXiao2qiang1YUANJing2(1.CollegeofEngineeringCorps,PLAUniversityofScienceandTechnology,Nanjing210007,China;2.Dept.ofCommunicationEngineering,NanjingInstituteofTechnology,Nanjing210013,China)Abstract:ThepaperdiscussestheapplicationofCFDsoftwaretovariousengineeringfields.Usingtwobenchmarks,laminarflowspastbluntbodiesaresimulated.Bycomparisonwithotherrelevantliterature,thesimulationsareaccept2able.Inviewofpracticability,itisgreatlyrecommendedthatCFDsoftwarebeutilizedtopre2designproductsinthefieldsofengineering.Keywords:CFD;engineeringfluid;numericalsimulation1.(Navier-Stokes[14]),,,,.50,,,(ComputationalFluidDynamics,CFD).,CFD.CFD.,CFD,CPU.,(DNS),.,CFD[1,2].,©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,CFD.,,.,.CFD.,CFD:FLUENTCFXSTAR-CD.FLUENT,.2CFDNavier-StokesCFD,,.,,..(),,,,.SIMPLE()..,CFD..,.QUICK().,.CFD.CFD.,,CFD.k-.,,..,k-,.3FLUENT.(FVM).:(power2law)(second2orderup2wind)QUICK(qudraudicupwindinterpolation)..SIM2PLEPoisson,.3.1Navier-Stokes():5u5x+5v5y=0,(1)x:5u5t+u5u5x+v5u5y=-15p5x+v52u5x2,(2)y:5v5t+u5v5x+v5v5y=-15p5y+v52v5y2,(3)3621:CFD©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.:u,v;p;,;,.3.2,1.:U=2.510-3m.s-1,=103kg.m-3,=10-3kg.m-1.s-1,D=0.1m,Re=UL/=250.13.3(1),u=U,v=0,p=0(4)(2),p=5p5x=5p5y=0(5)(3),u=U,v=0,p=0(6)(4),(u,v)n=Vn=0(7):n;Vn,,.3.4(,10),.,,:u(x,y)|t=02U0y1.0U-1.0y0(8)v(x,y)|t=0=0(9)p(x,y)|t=0=0(10)46()20043©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3.5:CD=2FD/U2D,(11):CL=2FL/U2D(12),FD,FL.25.2(p/atm)(t=5082s)3(p/atm)(t=2263.2s)4(t=125082s,t=10s):(1),;(2);(3),,.[5],CFD.,,.().5621:CFD©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.5(t=23.22263.2s,t=10s)4CFD,.,,,.,,,.:[1],.[M].:,1997.[2].[M].:,1993.[3].[M].:,1994.[4].[M]..:,2000.[5]M.Schafer.EvaluationofaCFDBenchmarkforLaminarFlows[EB/OL].[:]66()20043©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.
本文标题:CFD软件在工程流体数值模拟中的应用
链接地址:https://www.777doc.com/doc-163296 .html