传热学专业英语词汇.doc
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Chapter1ThermodynamicsandHeatTransfer
主要内容
1. Concepts:
heat(thermalenergy)、heattransfer、thermodynamics、totalamountofheattransfer、heattransferrate、heatflux、conduction、convection、radiation
2. Equations:
1)Thefirstlawofthermodynamics(conservationofenergyprinciple)
2)Heatbalanceequation:
a)closedsystem;b)opensystem(steady-flow)
3)Fourier’slawofheatconduction
4)Newton’slawofcooling
5)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总热量
conduction导热convection对流radiation辐射
thermalconductivity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、steady\transientheattransfer、uniform\nonuniformtemperaturedistribution
2. Equations:
1)Fourier’slawofheatconduction(§2-1)
2)Heatconductionequation(inrectangular\cylindrical\sphericalcoordinates)(§2-2、§2-3)
3)Boundaryconditions:
(§2-4)
a) SpecifiedtemperatureB.C.
b)SpecifiedheatfluxB.C.[specialcase(dt/dx=0):
insulation、thermalsymmetry];
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=const
b)withheatgeneration,SpecifiedB.C.orConvectionB.C.:
(§2-6)
∆Tmax=To-Ts=gs2/2nk;q(x)=gx/n;Ts=T¥+gs/nh
characteristiclengthS,shapefactorn:
planewalls—s=L(halfthickness),n=1
cylinders——s=ro,n=2
spheres——s=ro,n=3
3. Methods:
Solveaheattransferproblem
1)Mathematicalformulation(differentialequation&B.C.)
2)Generalsolutionofequation
3)ApplicationofB.C.s
4)Uniquesolutionoftheproblem
主要专业词汇
temperaturefield\distribution温度场\分布temperaturegradient温度梯度
heatgeneration热生成(热源)initial\boundarycondition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
1. Concepts:
multilayer\compositewalloverallheattransfercoefficientU
thermalresistanceRtthermalcontactresistanceRccriticalradiusofinsulationRcr
finefficiencyfineffectiveness
2. Equations:
ü Multiplayerplanewall、cylindersandspheres:
ü Fin:
finequation——refertotheattachment.
1)Uniformcross-section:
refertotheattachment.
2)Varyingcross-section:
refertotheattachment.
主要专业词汇
thermalresistance热阻parallel并联inseries串联
thermalcontactresistance接触热阻compositewall复合壁面
thermalgrease热脂cross-section横截面temperatureexecess过余温度
hyperbolic双曲线的exponent指数
fin肋(翅)片finbase肋基fintip肋端
finefficiency肋效率fineffectiveness肋片有效度
Chapter4TransientHeatConduction
主要内容
1. Concepts:
lumpedsystemanalysischaracteristiclength(Lc=V/A)
Biotnumber(Bi=hLc/k)Fouriernumber(τ=at/L)
2. Equations:
l Bi≤0,lumpedsystemanalysis(§4-1)
l Bi>0,Heisler/GroberchartsORanalyticalexpressions
ü 1-D:
a)infinitelargeplanewalls,longcylindersandspheres(§4-2)
b)semi-infinitesolids(§4-3)
ü multidimensional:
productsolution(§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)method、finitedifferencemethod、
discretization、node、spacestep、timestep、
meshBiotnumber、meshFouriernumber、mirrorimageconcept、
explicit/implicitmethod、stabilitycriterion(primarycoefficients³0)
Numericalerror:
1)discretization/truncationerror;2)round-offerror
2. Methods:
Numericalsolution:
1)Discretizationinspaceandtime(Dx,Dt);
2)Buildallnodes’finitedifferenceformulations(includinginteriorandboundarynodes);
i. Finitedifferencemethod