The results of visualization experiment show that temperature and flow fields are un-steady and three dimensional in space for this natural convection of horizontal air layer heated from below.
实验结果表明，这种水平空气层自然对流换热是非稳态的，并且在空间上是三维的。
Triggering and evolution of winter-time natural convection cooling effect in fractured-rock revetment embankments of the Qinghai-Tibet Railway are investigated by means of an air-flow function.
导出适用于变渗透率多孔介质的无量纲控制方程，并针对青藏铁路工程建设，分析了碎石护坡路堤冬季自然对流降温效应的产生和演化过程。
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