大庆市居住区室外风环境模拟研究

STUDY ON OUTDOOR WIND ENVIRONMENT SIMULATION IN RESIDENTIAL AREA OF DAQING CITY

通过应用"五日滑动平均值"的方法,在确定大庆地区近年来风环境主要参数的基础上,调研了大庆地区137个已建居住小区,从而归纳总结出大庆市区六类基本小区原型并构建仿真模型在PHOENICS软件中进行模拟,得出六类基本原型的风环境云图,通过分析对比可得出如下结论,由于外界的宏观气象条件及建筑尺度、建筑间距等微观条件基本保持一致,故相互之间的风环境彼此具有一定的相似性;原型A、C、D、E的风速比的分布情况基本一致,而原型B、F的风速比相对最小;六种基本类型内部空气流动性排序为:原型F<原型C<原型E<原型<原型A<原型D。结合相关分析及实际情况建议在大庆市区范围内多采用原型D及原型E的小区布局方式。

By applying the ＂five day moving average＂ method, we have determined the main parame- ters of wind environment in recent years in Daqing area. According to the parameters, we investigated 137 residential districts in Daqing area, summarized six types of basic residential prototypes, and built the simulation model in PHOENICS software. We have obtained six basic types of wind velocity nephogram, wind pressure nephogram, air age nephogram and wind velocity ratio nephogram. Through analysis and comparison, the following conclusions can be drawn： since the macroscopic meteorological conditions of the outside world, microscopic conditions such as building scale and building spacing are basically consistent, the wind environments between them have certain similarities with each other. The distribution of wind speed ratio of prototype A, C, D and E is basically the same, but the wind speed ratio of prototype B and F is the smallest. The six basic types of internal air mobility are： prototype F〈 prototype C〈 prototype E〈 prototype A〈 prototype D. Combining with relevant analysis and actual situation, it is suggested that prototype D and prototype E should be adopted within the urban area of Daqing.