层状通风不同回风口布置对室内污染物分布的影响数值模拟分析  

Numerical Simulation and Analysis of Indoor Contaminant Distribution on Four Ventilation Patterns under Stratum Ventilation

作　　者：殷结峰[1] 马兵善[1] 孟曦[1] 陈思阳[1] 

机构地区：[1]兰州理工大学土木工程学院,兰州730050

出　　处：《制冷与空调（四川）》2012年第6期600-604,共5页Refrigeration and Air Conditioning

摘　　要：针对新型通风方式-层状通风,采用RNGk-ε模型对4种不同回风口布置方式下的通风房间进行数值模拟,对4种工况室内污染物衰减结果及污染物浓度场进行分析比较,并通过示踪气体衰减方法计算室内通风效率。结果表明回风口位于房间顶部的通风效果最优。On account of a new type of ventilation, stratum ventilation, with the RNG k-εturbulence model used to predict indoor airflow, four stratum ventilation patterns in air-conditioned room are discussed. The measured CO2 concentration decay results and concentration field are studied numerically for four different cases; a concentration decay of CO2 is used to calculate the ventilation efficiency. Compared with the numerical result of four ventilation patterns, the ventilation whose outlets are located at the top of the room is better due to its better ventilation efficiency.

关 键 词：层状通风 数值模拟 浓度场 通风效率 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]