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摘要 运用CFD软件模拟分析了矩形天窗及挡风板几何特性对采用天窗进行自然通风的一南北向厂房的影响，结果表明天窗宽高比为1.8时厂房的自然通风量最大，通风效果最好；挡风板高度增加，自然通风量有所增加，但增量较小；自然通风量随挡风板与天窗间距的增大以对数规律增加。 关键词 自然通风 天窗 CFD Influence of geometric characteristics of monitor and wind shield on natural ventilation effect of a workshop By Liu Dong★, Liu Xiaoyu and Zhuang Jiangting Abstract Simulates and analyses the influence in a south-oriented workshop using rectangular monitor for ventilation by means of CFD software. The results indicate that when the width-height ratio of the monitor is 1.8, it has the biggest natural ventilation rate, and that the ventilation rate increases slowly with the increase of the height of the wind shield and logarithmically with the increase of the distance between the wind shield and the monitor. Keywords natural ventilation, monitor, CFD ★ Tongji University, Shanghai, China