The ventilation effect in different places in the teaching building is different. The aim of this paper is to study the relative ventilation relationship of the rooms in “L” type middle school teaching building. Taking Xiamen in the subtropical region as a typical city, different aspect ratio for 1:1, 1:1.5 and 1:2 were set as variables, using the CFD simulation method. Combined and separated effects of the defined parameters on natural ventilation performance are evaluated using the ratio of age of air area as criteria. The result shows that the “L” type teaching building ventilated condition presents several characteristics as the approaching wind direction changed. Corner, long wing and short wing of building have some influences on the wind environment for classrooms. In addition, different aspect ratio “L” type buildings correspond to different optimal inlet wind angles. The research results in this paper can help architects to design buildings more scientifically and reasonably.

教学楼不同地方的通风效果是不同的。本文的目的是研究“ L”型中学教学楼内房间的相对通风关系。以亚热带地区的厦门为典型城市，采用CFD模拟方法，将1：1、1：1.5和1：2的不同宽高比设置为变量。定义参数对自然通风性能的综合影响和分离影响以空气年龄的比率为标准进行评估。结果表明，随着风向的变化，“ L”型教学楼的通风状况呈现出几种特征。建筑物的角落，长翼和短翼会对教室的风环境产生一些影响。此外，不同纵横比的“ L”型建筑对应于不同的最佳进气风向角。本文的研究成果可以帮助建筑师更科学合理地设计建筑物。