热储能系统中二维多重相变问题第二类边界条件的双倒易边界元解法

DRBEM FOR TWO DIMENSIONAL MULTIPLE PHASE CHANGE PROBLEMS WITH SECOND KIND BOUNDARY CONDITIONS IN THERMAL STORAGE SYSTEMS

本文发展了二维非定常热导热并带有多重相变运动边界问题的双倒易边界元方法．对热储能系统中相变材料的多重相变运动边界问题进行了模拟，得出了温度分布及相变界面随时间的变化，结果表明，双倒易边界元方法能够很好地处理这类问题．

In this paper, the Dual Reciprocity Boundary Element Method (DRBEM) to calculate two dimensional multiple phase-change moving boundary problems is developed. Melting and freezing problems involving multiple moving boundaries of phase change materials (PCM) in thermal storage systems are modeled and the transient temperature distributions and phase front time-marching images are predicted.