传热学专业英语词汇.docVIP

传热学专业英语词汇

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

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(differentialequationB.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

Chapter3Ste