处理相变传热的一个数学模型

A mathematical model for phase change heat transfer

应用直接差分方法对相变热源项进行处理，给出了各种不同情况下的计算式 在此基础上，给出了一个通用的计算公式 最后应用该方法计算了钢液的凝固传热，计算结果与物理过程吻合很好

Using the direct finite difference method,the formulations of phase change heat transfer in different situations have been given.On the basis of these,a general formulation is proposed to describe the source of solidifying heat transfer.As an example,the solidifying heat transfer has been calculated by using the model.