摘要
张家口处于我国华北地区,冬天较为寒冬,张家口高寒地区建筑风侵失温过程进行模拟,可以优化建筑的平面分布和体型设计。提出一种基于Ecotect模拟分析的张家口高寒地区建筑风侵失温过程模拟计算方法,建筑规划设计提供指导。针对不同建筑之间相差过大的风环境,以及建筑区域内风力强劲的特点,进行风速场的数值离散化处理,计算张家口高寒地区建筑室外风环境风速场的应变张量和旋率张量,修正流湍流度,根据张家口市的城市特点与温度变化情况,对张家口市边界层结构进行了大气稳定度分析,结合风速场分布形式实现张家口高寒地区建筑风侵失温过程模拟。仿真实验结果表明,采用该方法模拟的张家口高寒地区建筑风侵失温过程,模拟计算的精度和准确度较高。
Zhangjiakou in north China area, the winter is cold, zhangjiakou area building wind andtemperature process simulation in cold condition, planar distribution and the shape design of buildingscan be optimized. Put forward a Zhangjiakou area building wind and temperature process simulationcalculation method based on Ecotect simulation analysis, construction planning and design to provideguidance. For excessive difference between different building wind environment, as well as thecharacteristics of the wind is strong, construction area of wind velocity field of the numericaldiscretization processing, calculation of Zhangjiakou cold area building outdoor wind environment windspeed field of the strain tensor and the spin rate tensor, fixed flow turbulence degrees, according to thecharacteristics and the temperature change of Zhangjiakou city situation, to the atmospheric boundarylayer structure of Zhangjiakou stability analysis, combining with the implementation of Zhangjiakou windvelocity field distribution form cold area building wind and temperature process simulation. Thesimulation experimental results show that the simulated by the method of cold condition in Zhangjiakouarea building wind and temperature process, the accuracy of simulation calculation and accuracy ishigher.
出处
《科技通报》
北大核心
2016年第5期111-115,共5页
Bulletin of Science and Technology
关键词
风速场
高寒地区
风侵失温
张家口
wind field
alpine regions
wind and loss of temperature
Zhangjiakou
