冬季散热器采暖房间颗粒物扩散模拟研究

Simulation of Dispersion of Particulates in Rooms Heating with Radiator in Winter

室内空气品质与人体健康息息相关,颗粒物浓度是室内空气品质的一个重要指标。以冬季散热器采暖房间为模型,对于室内的颗粒物(PM2.5)浓度进行数值模拟,采用计算流体力学(CFD)方法,建立了房间内颗粒物扩散的数学模型和输运模型。模拟结果显示,室内颗粒物的来源主要是由冷风渗透带来的,其分布状况受到渗透风及热气流的影响,并且极易在入口处和室内上方空间聚集。模拟结果对今后研究室内空气质量具有一定的指导意义。

Indoor air quality is closely related to human health. Particle concentration is an important indicator of indoor air quality. This paper mainly selects the winter room under the radiator heating as a model to simulate the indoor particle( PM2. 5 ) concentration. Using the Computational Fluid Dynamics( CFD) method,the mathematical model and transport model are established. The simulation results show that the source of the indoor particles is mainly caused by the cold air infiltration,and its distribution is affected by the permeation wind and hot gas flow,and it is very easy to gather at the entrance and above the room. The simulation results have some guiding significance for the study of indoor air quality in the future.