建筑群立面风驱雨捕集特性  

Wind-driven rain catch characteristics of building complex facades

作　　者：刘向伟[1] 吴柄璇 郭兴国[1] 罗娜 杜立志 LIU Xiangwei;WU Bingxuan;GUO Xingguo;LUO Na;DU Lizhi(School of Infrastructure Engineering,Nanchang University,Nanchang 330031,Jiangxi Province,China;CITIC General Institute of Architectural Design and Research Co.,Ltd.,Wuhan 430014,Hubei Province,China)

机构地区：[1]南昌大学工程建设学院,江西南昌330031 [2]中信建筑设计研究总院有限公司,湖北武汉430014

出　　处：《化学工程》2025年第1期23-28,35,共7页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(51708271)。

摘　　要：风驱雨作为建筑围护结构中最重要的湿源,对建筑围护结构的热湿性能、力学性能、耐久性、建筑能耗和碳排放等均有重要影响。很多学者对建筑立面风驱雨展开深入的研究,但研究对象多为独栋建筑。实际上,中国建筑多以建筑群落的形式存在,建筑自身对风场有干扰,建筑群内各建筑立面的风向和风速均可能会发生较大变化,从而影响入侵到建筑立面的风驱雨。为了揭示建筑群内各建筑立面的风驱雨捕集特性,基于风相和雨相质量和动量守恒原理,采用欧拉多相流方法建立并验证建筑风驱雨模型,并应用该模型对建筑群立面的风驱雨捕集特性进行分析。以广州地区为例,由结果可知:建筑群立面风驱雨捕集比与独栋建筑立面风驱雨捕集比相比有较大差异,其中最大差异高达26.3%,最小差异亦可达5.2%。另外,由于受风阻效应的影响,建筑群内各建筑立面的捕集比也存在差异。Wind-driven rain,as the most significant sources of moisture in building envelopes,has a crucial impact on the thermal and moisture performance,mechanical properties,durability,building energy consumption and carbon emissions.Numerous scholars investigated the wind-driven rain in building facades,but majority of studies focused on the standalone buildings.In reality,buildings often exist in the form of complexes in China,and these complexes themselves exert a substantial influence on the wind field.The wind direction and velocity on each building facade within an architectural complex may undergo considerable variations,affecting the exposure of each facade to wind-driven rain.To reveal the characteristics of wind-driven rain on various building facades within architectural complexes,this study established and validated a wind-driven rain model based on the principles of mass and momentum conservation in the wind and rain phases,employing the eulerian multiphase flow method.The model was applied to study the wind-driven rain characteristics on building facades within a building complexs.Taking Guangzhou as an example,the results show that the catch ratio of wind-driven rain on building facades within building complexes exhibits a maximum deviation of 26.3%in comparison to individual building,while the minimum disparity reaches 5.2%.Additionally,due to the wind-blocking effect,there are variations in the catch ratio of wind-driven rain on building facades within the building complex.

关 键 词：风驱雨 欧拉多相流 捕集比 风阻效应 

分 类 号：TU13[建筑科学—建筑理论]