采用等效热容法求解伴有相变过程的瞬态热传导问题 .在整个区域建立统一的能量方程 ,将分区域求解问题化为整个区域的非线性问题处理 .给出了解决相变温度为单一温度或者相变温度区间很小时产生的数值奇异问题的方法 .用热焓判据判断单元是否发生相变 ,并考虑了固液两相材料物性参数的变化 ,相变界面位置按线性插值计算 .算例表明 ,等效热容法求解相变传热问题 ,程序简单 ,计算效率高 ,相变界面位置计算准确 . Equivalent heat capacity method is used to solve the transient heat conduction problem with the phase change process.Uniform energy equations are established in the whole area and the sub-area solution problem is treated as the non-linear problem in the whole area.The solution of the phase transition temperature is Single temperature or phase transition temperature range is very small when the value of singular problems arise.Using the enthalpy criterion to determine whether the unit phase transition occurred, and taking into account the material properties of solid-liquid two-phase material changes in the phase change interface position calculated by linear interpolation The example shows that the equivalent heat capacity method solves the phase change heat transfer problem, the program is simple, the calculation efficiency is high, and the phase change interface position is calculated accurately.