中文摘要：

本文对充满水和玻璃球的倾斜多孔介质腔体,在其一侧壁温维持恒定值、而相对侧壁温以此恒定值为时均值并按一定的幅值随时间周期性变化的情况下,实验研究了周期性壁温变化和腔体倾角对多孔介质腔体内的瞬态自然对流换热的影响。结果表明,通过多孔介质腔体的净热流总是从腔体的较低壁面指向较高壁面。

英文摘要：

In the present paper,the effects of wall temperature oscillation and inclined angle of enclosure on the transient heat transfer performance of natural convection are experimentally studied in the porous media enclosure.The enclosure is filled with water and glass balls.For one side wall, the temperature is kept as constant,while it varies time-periodically for the opposing side wall.The result indicates that the net heat flux across the porous media enclosure is always transferred from the lower side wall to the upper side wall.