办公建筑不同窗口形式自然通风规律研究

Research on Natural Ventilation Rule of Office Building Window Openings

文章以一个典型的办公建筑房间为基本模型,主要针对窗户开口的几何参数:面积(area)、形状(shape)、位置(position)和角度(angle)进行研究。并采用控制变量的方法,改变一种参数设置,共得到十七种参数模型。使用Autodesk CFD软件对每种情况进行模拟,得到测点风速值和风速差值,并通过等距抽样的方法计算出房间内的平均风速。对比结果分析每种参数条件窗户开口的改变对室内自然通风的影响,从而为建筑窗户设计提供一定的依据。结果表明:开口面积大小是决定室内自然通风的重要参数。同时,形状和位置以及角度对室内风速和气流分布的均匀性均有一定的影响。

In this paper, a common office building room as the basic model, mainly for the window openings of the geometric parameters(size, shape, location and angle) to study. And the use of control variables method, a parameter change, keep the parameters unchanged, set a total of seventeen cases. Each model is simulated using Autodesk CFD software to derive the wind speed at the center of the room and calculate the average wind speed in the room by equidistant sampling. The results of the comparison, analysis of each parameter conditions change the opening of the windows on the indoor natural ventilation, so as to provide a basis for the design of architectural windows. The results show that the size of the window area is an important parameter to determine the natural ventilation in the room. At the same time, other standards such as shape and location and angle on the indoor wind speed and air distribution uniformity have a certain impact.