根据体积平均理论,建立多孔介质中融化相变过程自然对流模型.数值模拟了以石英砂颗粒为骨架、冰为填充相的二维融化过程.数值结果表明,在融化区上部发生较强烈的自然对流,融化界面与水平线倾角随融化时间越来越大.
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