建筑设备科学与工程学院

Indoor and Built Environment

中文关键字：气流组织; 贴附式空气幕; 计算流体动力学; 湍流模型; 全尺寸实验验证，英文关键字：Air distribution; Attached air curtain; CFD; Turbu

This paper presents a newly developed attached air curtain ventilation system. The airflow patterns produced by attached air curtain ventilation were modelled by computational fluid dynamic method. A full-scale experiment was conducted to determine the accuracy of four turbulence models: standard k–e, RNG k–e, SST k–w and RSM-IP. SST k–w model was shown to produce the most accurate results. The air distribution of attached air curtain ventilation within a full-scale enclosure could be predicted with an overall inaccuracy of 12%. All four models gave reasonably accurate prediction on air distribution for attached plane wall jet, but due to impingement in a corner, only RNG k–e and SST k–w models were shown to be reliable. The slot location could have a significant influence on simulation accuracy. When jet slot is close to sidewall, the numerical results of four models show good agreement with experimental data. The inaccuracy increases as s/b grows, but the maximum value appears in case of s/b=5, when airflow pattern of attached air curtain ventilation model has a combination characteristic of both mixing and displacement ventilation. In future studies, we should focus more on attached air curtain ventilation to provide a combination of mixing and displacement ventilation flow, which would provide useful application to different locations with wall-mounted terminals.

尹海国

李安桂[重名-待确认],Haiguo Yin

Journal paper

卷：25

期：6

页：962-975

no

2016-10-01