窗口开启方式对PM2.5室内运动影响的探究  

STUDY ON IMPACT OF WINDOW OPENING MODES ON MOTION OF INDOOR PM2.5

作　　者：金汐[1] 孟冲[1] 

机构地区：[1]中国建筑科学研究院,北京100013

出　　处：《建筑技术》2014年第11期1022-1025,共4页Architecture Technology

基　　金：国家"十二五"资助项目(2012BAJ02B02

摘　　要：采用FLUENT软件模拟自然通风条件下,不同窗口开启方式下住宅室内PM2.5的运动和分布情况。窗口开启方式选择平开窗、上悬窗及下悬窗3种。连续相模拟采用标准模型,颗粒相模拟采用离散相模型(DPM)。研究结果表明:在室外空气质量优于室内的前提下,平开窗工况下,室内流场均匀平稳,室内颗粒物平均浓度最低;上悬窗工况下,对气流向上的引导作用造成下部人员活动区新风量降低,颗粒物堆积不易排出,室内颗粒物平均浓度最高;下悬窗工况下室内颗粒物平均浓度介于两工况之间。Standard κ-ε model and discrete phase model （DPM）were used in the simulation of movement and distribution of residential indoor PM2.5 with different window open modes under the condition of the natural ventilation. The window open modes contain casement windows,top-hung window and bottom-hinged window. The results showed that on the premise of air quality outdoor better than indoor,under the condition of casement windows, indoor flow distribution is steady and the average concentration of indoor particulate matter is the lowest among all the simulated conditions; under the condition of top-hung window, the window shape gives an upward guidance on airflow, results in decrease of fresh air volume in the lower personnel activity area. Particulate matter piled up,so the indoor particulate matter concentration on average is the highest among all the operation conditions; under the condition of bottom-hinged window, the indoor particulate matter concentration on average is between the top-hung window condition and the bottom-hinged window condition.

关 键 词：窗口开启方式 数值模拟 离散相模型(DPM) PM2.5颗粒物浓度 

分 类 号：TU201.5[建筑科学—建筑设计及理论]