The numerical scheme for unsteady thermal convection flow in a square cavity is developed in this paper.

该文从二维方腔流动的涡流函数方程出发，建立了方腔内热对流的非定常数值计算模型。

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A warm convection flow then lofted it further to between 26, 000 ft and 32, 500 ft, well above cloud level.

然后一股暖气流使其高度更高达到26000英尺和32500英尺之间，几乎到了云层的高度。

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Zinc stearate particles has proved out to be a good trace material for visual display of natural convection flow pattern in enclosure.

实验结果表明，硬脂酸锌粉粒是显示空气自然对流流动的比较理想材料。

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