某综合政务中心大空间中庭不同送风高度下气流组织模拟分析

Simulation Analysis of Airflow Organization at Different Supply Air Heights in a Large Atrium of a Comprehensive Administration Center

文章运用CFD技术对不同气流组织下的北京某综合政务中心内的高大空间中庭热环境进行了模拟分析。通过模拟得出以下结论:当中庭空间采用侧送下回气流形式时,对比了不同送风高度下室内温度、风速分布。当送风高度为2.5 m、3 m和3.5 m,人员活动区温度分布均能满足设计要求。但2.5 m和3 m送风时,人员活动区局部风速大于0.5 m/s,人员会有明显不适感,3.5 m送风时,人员活动区风速整体小于0.5 m/s,人员舒适性更高。In this paper, CFD technology is used to simulate the airflow organization of the atrium of a large space in a comprehensive governmental affairs center in Beijing. The following conclusions are drawn from the simulation: when the atrium adopts the side-feeding and down-returning airflow organization scheme, the temperature and wind speed distribution in the room under different air supply heights are compared, and the simulation concludes that the temperature of the personnel activity area can meet the design requirements when the air supply heights of 2.5 m, 3 m and 3.5 m are used. However, when the air supply height of 2.5 meters and 3 meters, the local wind speed in the personnel activity area is greater than 0.5 m/s, and the personnel will have obvious discomfort, and when the air supply height of 3.5 meters, the overall wind speed in the personnel activity area is less than 0.5 m/s, which makes the personnel more comfortable.