摘要
以计算流体力学(CFD)为基础,建立混合通风房间不同气流组织形式的物理和数学简化模型,模拟了不同送回风口位置和不同污染源分布形式下室内流场和污染物的扩散特征。对不同条件下室内的流场及污染物浓度分布进行了比较,并且针对不同污染物源项分布,通过引入排污效率这一概念,对各种通风方式的排污效率进行了对比。本文结果表明,当污染源平均分布,异侧送回风较为适宜,而当污染源单一分布时,同侧送风较为适宜。
Based on Computational Fluid Dynamics （CFD） method, establishing the mathematical and physical simplified models, the air flow patterns and pollutant concentration distributions in a mixed ventilation room are simulated. The results are compared under different combinations of ventilation vents and source conditions. By introducing the concept of contaminant removal effectiveness, the comparisons show that opposite-side air supply is more appropriate under averaged distribution of pollution source, and with a nearly point-source condition, the same- side of air supply is more appropriate.
出处
《建筑热能通风空调》
2016年第12期12-15,20,共5页
Building Energy & Environment
基金
建筑安全与环境国家重点实验室开放课题基金资助(BSBE2015-10)
关键词
混合通风
数值模拟
无量纲浓度
排污效率
mixed ventilation
numerical simulation
dimensionless concentration
contaminant removal effectiveness
