珠海市某标志性超高层建筑群的室外风环境及舒适性模拟  

Numerical simulation of wind environment and outdoor comfort surrounding a typical super high-rise building cluster in Zhuhai

作　　者：夏冬 王静 孙丽烨 涂建文 孙弦 XIA Dong;WANG Jing;SUN Liye;TU Jianwen;SUN Xian(Zhuhai Public Meteorological Service Center, Zhuhai 519000, China)

机构地区：[1]珠海市公共气象服务中心,广东珠海519000

出　　处：《中山大学学报（自然科学版）》2019年第4期42-52,共11页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金(4181101029);国家重点基础研究发展计划973项目(2013CB430202);江苏高校优势学科建设工程资助项目(PAPD);长江学者和创新团队发展计划(PCSIRT);江苏省青蓝工程创新团队项目

摘　　要：考虑当地的气候条件,利用PHOENICS软件对珠海市某标志性超高层建筑群的风环境舒适性进行了CFD数值模拟,结果表明: 1)研究区各个季节的主导风向有所不同,冬季主要吹偏北风,夏季主要吹西南偏南风,过渡季节则以东北偏东风为主,不同风向下地面和建筑立面风速及舒适性都不同;2)当风从高层建筑吹向低层建筑时,低层建筑会被高层建筑阻挡,低层建筑背面、高低层建筑间的地面通风和舒适性都较差。而在建筑立面通风较好的地方,比如高层建筑的迎风面及两侧,这些地方较为舒适;3)当风从低层建筑吹向高层建筑时,风通过低层建筑物之后以绕流作用再次影响地面,建筑物之间的区域通风条件都较好,同时建筑立面的通风环境和舒适度都比风由高层建筑吹向低层建筑的时候更好;4)由于风随高度的增加而增大,若在高层建筑的迎风面和两侧拐角处,以及通风廊道处,局地风速超过3级时,人体感觉也会不舒适。CFD simulation is utilized to analyze the wind environment and outdoor comfort surrounding a typical super high-rise building cluster in Zhuhai by using a software PHOENICS with consideration of local climatic conditions. The results are as follows: 1) The direction of dominant wind changes from season to season in the research district, which is north (N) in winter, south-southwest (SSW) in summer and east-northeast (ENE) in the transitional season, resulting in the variations of the wind and comfort in down ground and building facade. 2) When the wind is blowing from the high-rise buildings to the low-rise buildings, the floor ventilation and comfort between the high-rise buildings and the low-rise buildings are poor, because of blockage effects. In the meanwhile, the well ventilated areas, for example the upwind side and both sides of the high-rise buildings, are more comfortable comparably. 3) When the wind blows from the lower buildings to the high-rise buildings, the ventilation conditions of the spaces between buildings are better, since the flows pass through the lower buildings and get amplified. And the ventilation and comfort of the facade are better in comparison with the situation when wind blows from the high-rise buildings to the low-rise buildings. 4) As the wind speed increases with the increase of height, people will feel uncomfortable in the upwind face and the corner of both sides of the high-rise buildings and the ventilation corridor, where wind speed exceeds Grade 3.

关 键 词：超高层建筑群 风环境 舒适度 CFD模拟 

分 类 号：P49[天文地球—大气科学及气象学]