光导管系统自然通风效果的CFD研究

CFD RESEARCH ON EFFECTS OF NATURAL VENTILATION IN LIGHT PIPE SYSTEM

本文利用CFD方法对光导管系统的自然通风进行模拟,综合分析了在不同大小和方向的室外风速下,风帽结构、通风管长、管道间距及光导管直径对自然通风效果的影响,结果表明,H型通风末端结构具有较好的通风效果,管长、管道间距与通风量之间存在最小风量极值点,通风量随着管道直径的增加而增大,这些结果为具有自然通风功能光导管系统实用化提供了理论指导。

The natural ventilation of the light pipe system was simulated by the CFD method.The effects of different factors,including velocity and directions of the outdoor wind,the construction of the terminals,the length of the ventilation pipe,the space between the two coaxial pipe and the diameter of the light pipe on the natural ventilation,was studied.The results shown that the H type terminal has the high natural ventilation effect,and there exists the minimal ventilation volume which vary with the length of the ventilation pipe and the space between the two coaxial pipe,and the ventilation volume increased with the increasing of diameter of light pipe.Those results can provide an theoretic instruction for the application of the light pipe system.