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1、Chapter1ThermodynamicsandHeatTransfer主要内容1. Concepts:heat(thermalenergy)、heattransfer、thermodynamics、totalamountofheattransfer、heattransferrate、heatflux、conduction、convection、radiation2. Equations:1) Thefirstlawofthermodynamics(conservationofenergyprinciple)2) Heatbalanceequation:a)closedsystem;b)op
2、ensystem(steady-flow)3) Fourierslawofheatconduction4) Newtonslawofcooling5) Stefan-Boltzmannlaw主要专业词汇heattransfer传热、热传递、传热学thermodynamics热力学caloric热素specificheat比热massflowrate质量流率latentheat潜热sensibleheat显热heatflux热流密度heattransferrate热流量totalamountofheattransfer总热conduction导热convection对流radiation辐射th
3、ermalconductivity热导率thermaldiffusivity热扩散率convection/combinedheattransfercoefficient对流/综合换热系数emissivity发射率absorptivity吸收率simultaneousheattransfer复合换热Chapter2HeatConductionEquation主要内容1. Concepts:temperaturefield、temperaturegradient、heatgeneration、initialcondition、boundarycondition、steadytransienthea
4、ttransfer、uniformnonuniformtemperaturedistribution2. Equations:1) Fourierslawofheatconduction(2-1)2) Heatconductionequation(inrectangularcylindricalsphericalcoordinates)(2-2、2-3)3) Boundaryconditions:(2-4)a) SpecifiedtemperatureB.C.b) SpecifiedheatfluxB.C.specialcase(dt/dx=0):insulation、thermalsymme
5、try;c) ConvectionB.C.d) RadiationB.C.e) InterfaceB.C.4) Averagethermalconductivitykave(2-7)5) Solutionofone-dimensional,steadyheatconductioninplanewalls、cylindersandspheres(k=const)：a)noheatgeneration,specifiedB.C.:T(x)orT(r)(2-5)Q(x)orQ(r),Q=constb)withheatgeneration,SpecifiedB.C.orConvectionB.C.:(
6、2-6)Tmax=T-Ts=gs2/2nk;q(x)=gx/n；Ts=T+gs/nhcharacteristiclengthS,shapefactorn:planewallss=L(halfthickness),n=1cylinderss=ro,n=2spheress=ro,n=33. Methods:Solveaheattransferproblem1) Mathematicalformulation(differentialequation&B.C.)2) Generalsolutionofequation3) ApplicationofB.C.s4) Uniquesolutionofth
7、eproblem主要专业词汇temperaturefielddistribution温度场分布temperaturegradient温度梯度heatgeneration热生成(热源)initialboundarycondition初始边界条件transientheattransfer瞬态(非稳态)传热isothermalsurface等温面Heatconductiondifferentialequation导热微分方程trialanderrormethod试算法iterate迭代convergence收敛Chapter3SteadyHeatConduction主要内容overallheattr
8、ansfercoefficientU1. Concepts:multilayercompositewallthermalresistanceRthermalcontactresistanceRcriticalradiusoftcinsulationRcrfinefficiencyfineffectiveness2. Equations:Multiplayerplanewall、cylindersandspheres:Fin:finequationrefertotheattachment.1)Uniformcross-section:refertotheattachment.2)Varyingc
9、ross-section:refertotheattachment.主要专业词汇thermalresistanee热阻parallel并联inseries串联thermaleontaetresistanee接触热阻eompositewall复合壁面thermalgrease热脂eross-seetion横截面temperatureexeeess过余温度hyperbolie双曲线的exponent指数fin肋(翅)片finbase肋基fintip肋端fineffieieney肋效率fineffeetiveness肋片有效度Chapter4TransientHeatConduetion主要内容1.
10、 Coneepts:lumpedsystemanalysischaracteristiclength(Lc=V/A)Biotnumber(Bi=hLc/k)Fouriernumber(t=at/L)2. Equations: BiWO,lumpedsystemanalysis(4-1) Bi0,Heisler/GroberchartsORanalyticalexpressions1-D：a)infinitelargeplanewalls,longeylindersandspheres(4-2)b)semi-infinitesolids(4-3)multidimensional:produets
11、olution(4-4)主要专业词汇lumpedsystemanalysis集总参数法characteristiclength特征长度(尺寸)dimension量纲nondimensionalize无量纲化dimensionlessquantity无量纲量semi-infinitesolid半无限大固体complementaryerrorfunction误差余函数series级数productionsolution乘积解Chapter5NumericalMethodsinHeatConduction主要内容1. Concepts:controlvolume(energybalance)meth
12、od、finitedifferencemethod、discretization、node、spacestep、timestep、meshBiotnumber、meshFouriernumber、mirrorimageconcept、explicit/implicitmethod、stabilitycriterion(primarycoefficients0)Numericalerror:1)discretization/truncationerror;2)round-offerror2. Methods:Numericalsolution:1) Discretizationinspacean
13、dtime(Ax,At);2) Buildallnodesfinitedifferenceformulations(includinginteriorandboundarynodes);i. Finitedifferencemethodii. Energybalancemethod(i.e.ControlVolumemethod)3) Solutionofnodaldifferenceeqs.ofheatconduction;i. Directmethod:GaussianEliminationii. Iterativemethod:Gauss-Seideliteration主要专业词汇con
14、trolvolume控制容积finitedifference有限差分Taylorseriesexpression泰勒级数展开式mirrorimageconcept镜像法Eliminationmethod消元法direct/iterativemethod直接/迭代方法explicit/implicitmethod显式/隐式格式stabilitycriterion稳定性条件primarycoefficients主系数unconditionally无条件地algebraiceq.代数方程discretization/truncationerror离散/截断误差round-offerror舍入误差Ch
15、apter6、7ForcedConvectionandNaturalConvection主要内容1.Concepts:Nu、Re、Gr、PrForce/naturalconvection、external/internalflow、velocity/thermalboundarylayerflowregimes、laminar/turbulentflowhydrodynamic/thermalentryregion、fullydevelopedregionCriticalReynoldsNumber(Rec)、hydraulicdiameter(Dh)、filmtemperature(Tf)、bulkmeanfluidtemperature(Tb)logarithmicmeantemperaturedifference(Tln)volumeexpansioncoefficient(B=1/T)effectivethermalconductivity(Keff=KNu)2.Equations:Dragforce:FD=CfpV2/2Heattra
