论文部分内容阅读
室外环境对于室内环境的影响受到了广泛的重视。在密闭条件下,室外污染一般通过建筑缝隙渗透到室内。利用数值模拟手段,研究楔形缝隙等不同缝隙形状下,室外悬浮颗粒物建筑缝隙穿透过程的影响。研究结果表明,楔形缝隙夹角对于粒径小于0.1μm和大于1μm的颗粒物穿透过程影响较为明显,同时在楔形缝隙入口高度相同时,透系数随着夹角的增大而减小。
The impact of the outdoor environment on the indoor environment has been widely valued. In confined conditions, outdoor pollution is generally infiltrated into the room through gaps in the building. Using numerical simulation method, the influence of different gap shapes such as wedge-shaped gap on the penetration process of the outdoor suspended particulate building gap was studied. The results show that the angle of wedge-shaped slit has a significant effect on the penetration process of particles smaller than 0.1μm and larger than 1μm. Meanwhile, the penetration coefficient decreases with the increase of the included angle at the same entrance wedge.