中文摘要：

以泡沫金属为基体,孔隙中填充相变材料制成的蓄热材料为研究对象,利用FLUENT凝固/熔化模型对填充和未填充泡沫金属的两种相变材料制成的蓄热球的相变传热过程进行数值模拟研究,得到了蓄热球传热过程的温度场分布、相界面移动规律。研究表明与未填充泡沫金属相变材料的蓄热球相比,填充泡沫金属相变材料的蓄热球能显著缩短其熔化时间并提高相变材料内部温度均匀性,从而能提高蓄热装置的蓄热速率,对相变问题的数值模拟以及相变蓄能装置的设计具有重要的参考价值。

英文摘要：

By solidification/melting model of FLUENT software,the process of heat change on two heat storage balls filled with or without metal foam is numerically simulated. Considered the first kind of boundary condition,temperature field is obtained and phase change interface position changed with time is also calculated. The results indicates that the complete melting time filled with metal foam is greatly shorter than that with paraffin only,enhancing the melting rate of heat storage system. The results got here can provide good references for the numerical simulation of phase change problem and the design of phase change energy storage device.