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对建筑物内自然对流气流形态进行了可视化研究。实验在一长方形房间内进行 ,相对的两个壁面分别加热和冷却 ,顶部和底部隔热 ,使Ra数达到 10 10 - 10 11范围 ,实验发现顶部和底部出现了两个旋涡。此现象与过去大多数理论研究和数值计算结果不同 ,其未知因素有待进一步研究。
The natural convection air flow patterns in the building were visualized. Experiments were carried out in a rectangular room. The opposite two walls were heated and cooled separately. The top and bottom walls were insulated from each other so that the Ra numbers ranged from 10 10 to 10 11. Two vortices appeared at the top and the bottom. This phenomenon is different from most theoretical research and numerical calculation in the past, and its unknown factors need further study.