群体建筑风环境的数值模拟及分析

NUMERICAL SIMULATION AND ANALYSIS OF WIND ENVIRONMENT AROUND BUILDING COMPLEX

群体建筑的布局优化及结构抗风设计都需要准确预测建筑群的风环境．针对风环境研究的必要性, 将气体流场数值模拟(CFD)方法引入建筑群风场效应的预测和研究中,侧重模拟分析了建筑群的布局改变而引起的风速及风压场的变化,获得了特定情形下较合理的气动布局;同时表明数值模拟方法可以作为风洞试验的前期预测手段,并为群体建筑的布局优化及结构抗风设计提供科学依据．

The optimization of building-complex arrangement and the design of structural wind resistance require an exact prediction of wind environment around the building complex. In view of the importance of wind environment, a numerical simulation （CFD） is introduced for the prediction of wind effect around the building complex. The wind velocity and pressure in various building arrangements are simulated and analyzed. A reasonable pneumatic layout for given buildings is obtained. The wind tunnel test can be carried out based on the prediction of the numerical simulation. At the same time, the numerical simulation can provide a scientific basis for the optimization of the building-complex arrangement and the design of structural wind resistance.