高层建筑密集区的风环境数值模拟研究

高层建筑密集区的风环境问题日益受到关注,因此在项目建设前期对其周围的风场特性进行研究与评估十分必要。本文通过某高层建筑密集区的CFD数值模拟研究,计算了16个风向角下其周边450m半径范围内的流场特征,分析了其兴建前后该区域的风速比分布特征,并据此分析关键点风速随风向的变化,最后比较了工程建设前后其周围区域的总体风环境水平。

Numerical Simulation Research on the Wind Environment in High-risen Buildings Concentrating Regions

The wind environment problems in high-risen buildings concentrating regions are gained more and more concentration in nowadays. So,it＇s necessary to study and evaluate the surrounding airflow characteristic, of the project before construction. In this paper, the airflow of a typical high-rise buildings concentrating region were studied by the way of numerical simulation （CFD）. First,the region surrounding the proposed buildings within a radius of 450 m was simulated under 16 different directions. The wind velocity ratios of this region were analyzed before and after the construction of the proposed buildings. Also,velocity ratio variety with wind directions of the key points was investigated. Last,the total wind environment levels before and after the constructions of the proposed buildings were compared.