自然通风开口流量系数影响因素探讨
Discussion on influencing factors of opening discharge coefficient in natural ventilation
摘要：
开口特性参数——流量系数是影响建筑自然通风流场的关键因素之一。对影响流量系数的因素如开口长宽比、开度、内外压差和温差、开口上安装的纱窗等进行了分析，指出了常值计算的有限性，提出自然通风研究应进行变流量系数定性分析。
关键词：自然通风,开口,流量系数
Abstract：
Discharge coefficient is a major factor influencing flow field in natural ventilation buildings. Analyses the influencing factors of the discharge coefficient such as the length/width ratio of the opening, the opening degree, the pressure difference and the temperature difference across the opening and a screen. Points out that the discharge coefficient can not be considered as a constant but should be analysed with actual conditions.
Keywords:natural ventilation, opening, discharge coefficient