摘要
采用控制容积积分法和求解压力耦合方程的半隐算法求解控制方程,选用标准k-ε湍流模型,对风绕某实际工程建筑群布局的流动特性进行数值计算,得到了建筑周围行人高度处在不同风向时的风速分布.结果表明,在上游建筑物的迎风面拐角附近以及前后排建筑之间的通道,风速最大,漩涡分布最强烈,是建筑物周围风环境最不安全的区域.通过分析比较,讨论了风向、建筑间距等因素对建筑风环境的影响.研究结果对于改进建筑设计与局部气候环境之间的关系具有参考意义.
Wind environment conditions around buildings necessary for the assessment of pedestrian comfort have been evaluated by numerical method. The Reynolds-averaging Navier-Stokes equations and the standard κ-ε turbulence models used in the simulation are discretized by the control volume method, The SIMPLEC algorithm is applied to fulfilling the continuity conditions. The layout of a typical building at the campus of Xi＇an Jiaotong University is selected as a test case for the computation. Test results show that the maximum wind velocity and the most intense eddy vortices occur at the comer of the windward side of the upstream buildings and on the alleyways between up-and downstream buildings, which are the most dangerous environment. Based on the comparison of different configurations, the influences of wind direction and building space distance are also discussed. The research results are useful for improving the architecture design with the consideation of the relationship between architecture and its local climate environment.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第8期1030-1033,共4页
Journal of Tongji University:Natural Science
基金
国家自然科学基金创新研究群体科学基金资助项目(50621062)
国家自然科学基金资助项目(50678122)
关键词
建筑物
风环境
湍流
数值模拟
buildings
wind environment
turbulence
numerical simulation
