摘要
基于著名的N-S方程,采用由k-ω湍流模型改进的SST k-ω模型,对由6个单体组成的规整行列式布置的群体周围风环境进行数值模拟,与单体情况的比较表明,随着列间距增大,群体干扰效应减弱,前排建筑的风压差比后排建筑变化明显,而后排建筑受前排建筑的遮挡,风压差比都低于1.同时分析了群体内部风环境情况,发现当列距为行距的4倍时,几乎无干扰效应,前后排建筑的通风性能良好.该项研究为城市规划和住宅小区设计提供了参考依据.
Based on the famous N -S equation and adopting SST k -ω model improved from k -ω eddy current model, the wind environment around the group consisting of 6 single buildings in determinant arrangement was simulated. By comparing with the single building, the test results showed that with the widening of layout of the buildings, group interferenee effect became weaker. The wind pressure difference of front buildings was more obvious that of back buildings and latter was below 1 because of their occlusion by the former. Meanwhile the wind-flow situation around the internal of group buildings was analyzed. The results showed that when column spacing is four times the row spacing, there was almost no interference reaction and ventilation performance between front and back buildings was good. The results provide reference for city planning and design.
出处
《郑州轻工业学院学报（自然科学版）》
CAS
2009年第4期79-83,共5页
Journal of Zhengzhou University of Light Industry:Natural Science
基金
福建省自然科学基金计划项目(E0510022)
福建省科技重大专项前期计划项目(2005ZY1016)
泉州市科技重点计划项目(2007G7)
厦门市科技计划高校创新项目(3502Z20083039)
关键词
风环境
住宅小区
行列式排列
数值模拟
wind environment
residential district
determinant arrangement
numerical simulation
