NumericalHeatTransfer（数值传热学）Chapter6PrimitiveVariableMethodsfor EllipticFlow国and Heat Transfer (1)1/39
1/39 Numerical Heat Transfer (数值传热学) Chapter 6 Primitive Variable Methods for Elliptic Flow and Heat Transfer（1）
（40学时教学主线）Ourteachingprinciple lineYou can solveturbulentprobsHighlightsfor solvingin irregular regionincompressibleFFHT.ThreemathfeaturesTurbulencemodelsSolutionofIrregulardomainFlow prob.DescretizationAlgorithms:ofconvectionAppliedtoSIMPLE,termsolveSIMPLERDiffusionSchemes:prob.FUD,CD,SUDQUICK....TDMA;MostASTM;IntermidiatefundamentalsLinearizationBasicpartpartGoverning eqs.Youcan solvelaminarflowYou have laid a solidDomaindiscretizationandheattransferproblemsfoundationforadvancedEq.discretizationinirregularregionstudyofCFDandNHT250
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Contents6.1Sourcetermsinmomentumequationsandtwokeyissuesinnumericallysolvingmomentumeguation6.2Staggeredgridsystemanddiscretizationofmomentumequation6.3PressurecorrectionmethodsforN-Sequation6.4ApproximationsinSIMPLEalgorithm6.5DiscussiononSiMPLEalgorithmandcriteriaforconvergence6.6DevelopmentsofSiMPLEalgorithm6.7Boundaryconditiontreatmentsforopensystem6.8Fluidflow&heattransferinaclosedsystem3/39
3/39 6.1 Source terms in momentum equations and two key issues in numerically solving momentum equation 6.2 Staggered grid system and discretization of momentum equation 6.3 Pressure correction methods for N-S equation 6.4 Approximations in SIMPLE algorithm 6.5 Discussion on SIMPLE algorithm and criteria for convergence 6.6 Developments of SIMPLE algorithm 6.7 Boundary condition treatments for open system 6.8 Fluid flow & heat transfer in a closed system Contents
6.1Sourcetermsinmomentumequationsandtwokeyissuesinnumericallysolvingmomentumequation6.1.1Introduction6.1.2Sourceinmomentumequations6.1.3Twokeyissuesinsolvingflowfield1.The conventional methods may lead to oscillatingpressurefield2.Pressure has no governing equation-To improve anassumed pressure field a specially designed algorithmis needed4/39
4/39 6.1 Source terms in momentum equations and two key issues in numerically solving momentum equation 6.1.2 Source in momentum equations 6.1.3 Two key issues in solving flow field 1. The conventional methods may lead to oscillating pressure field 2. Pressure has no governing equation-To improve an assumed pressure field a specially designed algorithm is needed 6.1.1 Introduction
6.1Sourcetermsinmomentumequationsandtwokeyissuesinnumericallysolvingmomentumequation6.1.1Introduction1 . Two kinds of most often encountered engineeringflows: boundary layer type and recirculation type00性底店边界障前滞止点速区5/39
5/39 1 . Two kinds of most often encountered engineering flows: boundary layer type and recirculation type 6.1 Source terms in momentum equations and two key issues in numerically solving momentum equation 6.1.1 Introduction