自然通风对香烟烟雾颗粒污染特性的模拟研究

Simulation study on the effect of natural ventilation on cigarette smoke particle pollution characteristics

由于室内吸烟的现象仍普遍存在,以此采取措施减少烟雾颗粒对居住者的危害就显得十分重要.为了探索自然通风对室内烟雾颗粒物污染特性的影响,本文以东北地区典型的住宅为研究对象,采用计算流体力学(CFD)方法模拟研究室内空气速度和颗粒物浓度的关系.结果表明,室内自然通风对香烟烟雾颗粒浓度有显著影响,随着自然通风速率的增强,降低了吸烟者周围的颗粒浓度并减少了留在室内的烟雾颗粒浓度,因此自然通风可以良好地改善存在吸烟现象的居住建筑室内空气质量.

As indoor smoking is still prevalent,it is vital that measures are taken to reduce the risk of smoke particles to occupants.In order to explore the effect of natural ventilation on the pollution characteristics of indoor smoke particles,this paper uses computational fluid dynamics(CFD)methods to simulate and study the relationship between indoor air velocity and particle concentration in a typical residential house in the Northeast.The results show that indoor natural ventilation has a significant effect on the flow characteristics and particle concentration of cigarette smoke particles,and that as the natural ventilation rate increases,the particle concentration around the occupants is reduced and the number of smoke particles inhaled and retained indoors is reduced,and that natural ventilation can improve the indoor air quality of residential buildings where smoking is present.