C字型建筑对于区域风环境的影响  

Effects of C-shaped Buildings on Regional Wind Environment

作　　者：王培栋 牟晓蕾[1] 许娜[2] WANG Pei-dong;MOU Xiao-lei;XU Na(School of Civil Engineering,Yantai University,Yantai 264005,China;School of Electromechanical and Automotive Engineering,Yantai University,Yantai 264005,China)

机构地区：[1]烟台大学土木工程学院,山东烟台264005 [2]烟台大学机电汽车工程学院,山东烟台264005

出　　处：《烟台大学学报（自然科学与工程版）》2022年第2期156-163,共8页Journal of Yantai University(Natural Science and Engineering Edition)

基　　金：国家自然科学基金资助项目(11802262,11502228)。

摘　　要：应用计算流体力学方法,通过与CAARC标准模型比对,确定了湍流模型,在此基础上,针对华东沿海地区含有C字型结构的某建筑群,模拟了夏季和冬季工况下连廊对区域风环境的影响。数值模拟结果表明,在夏季时,连廊的存在使C字型建筑背风区的风环境质量变差,易出现热量和灰尘聚集的现象,去掉连廊后气流滞留区内风速提高,该区域风环境质量得到改善;冬季时,连廊处存在较高的气压差值,气流经过建筑会形成地面漩涡气流和螺旋上升气流,易导致此处产生扬尘,去掉连廊后连廊处的气压差大幅减小,区域气流流动平缓,不易产生扬尘。Applying computational fluid dynamics method and comparing with the CAARC standard model,a turbulence model is built to simulate the effects of corridor on regional wind environment under summer and winter conditions in a building group with C-shaped structure in the coastal area of East China.Numerical simulation results show that in summer,the presence of the corridor makes the wind environment quality bad in the leeward area of the C-shaped building,and the phenomenon of heat and dust accumulation is prone to occur.Removal of the corridor can increase the wind speed in the air retention area and improve the wind environment.In winter,there is a high air pressure difference at the corridor,and the airflow through the building generates ground vortex airflow and spiral updraft,which may raise dust easily.Removing the corridor can largely reduce the air pressure difference and smooth the airflow,and the dust on the ground cannot be raised easily.

关 键 词：风环境 C字型建筑 流体力学 湍流模型 数值模拟 

分 类 号：O355[理学—流体力学]