文档介绍：Chapter2 HeatConductionEquation(HeatConductionDifferentialEquation)Temperaturedistribution12-1 Introduction(oncepts)2-2 GeneralHeatConductionEquation2-3 One-DimensionalHeatConductionEquation2-4 BoundaryandInitialConditions2-5 SolutionofSteadyOne-DimensionalHeatConduction Problems2-6 HeatGenerationinaSolid2-7 VariableThermalConductivity,k(T)2-8 SummaryChapter2HeatConductionEquation (ScalarField)Unsteady:Steady:Two-dimensional:One-dimensional:CylindricalCoordinates:SphericalCoordinates:Chapter2HeatConductionEquation 2-&IsothermIsothermalSurfaceIsothermChapter2HeatConductionEquation 2-:thenormaloftheisothermatpointP(vector,+T)Chapter2HeatConductionEquation 2-1IntroductionForaunsteadyproblemitdependsalsoonthetime!PInrectangularcoordinatesnormaltotheIsotherm5Chapter2HeatConductionEquation 2-&Fourier’sLawInrectangularcoordinates6Chapter2HeatConductionEquation 2-(interiorheatsource)TotalrateofheatgenerationCondition??:heatgenerationperunitvolume7Chapter2HeatConductionEquation 2-(differentialvolumeelement)1stlawofthermodynamics:theconservationofenergyprinciple8Chapter2HeatConductionEquation 2-2GeneralHeatConductionEquationEnergyintheelement:Energyouttheelement:Fourier’sLaw9Chapter2HeatConductionEquation 2-2GeneralHeatConductionEquationThechangerateintheenergycontentoftheelementTherateofheatgenerationwithintheelement10