本文对空气流过烧结微细多孔介质内部的对流换热进行了实验研究.实验段为烧结多孔介质,颗粒的平均直径为0.2 mm.通过"单吹法"的实验方法进行瞬态实验,并用两种不同的数据处理方法得到了多孔介质内部对流换热系数.数据处理方法1利用局部非热平衡能量方程,结合实验数据,数值求得了多孔介质内部对流换热系数.方法2利用实验数据直接求得内部对流换热系数.研究表明:用数据处理方法1得到的多孔介质内部对流换热系与用方法2得到的结果相差在10%以内,与已有结果基本吻合.
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