绿地空间分布格局对城市热环境影响的数值模拟分析 ——以太原市为例

为探寻绿地分布格局对城市热环境的影响程度及方式,结合遥感技术,运用CFD数值模拟方法,对城市中五类常见的绿地布局形式的温度场和速度场进行数值模拟.结果表明:将CFD技术引入城市热环境研究,利用遥感技术对其进行参数修正,这一思路是可行的;根据典型绿地分布格局的热环境模拟分析,楔状格局具有较好的热环境效应,即该格局在城市中的降温效果最为明显;放射状和条带状的次之;点状格局对周边环境的降温效果相对较弱,但其速度场内局部漩涡最为明显,在小范围内的降温效果是比较明显的,可以作为改善局部小气候的手段;环状格局降温效果最弱.

Numerical simulation for the influence of green space patterns on urban thermal environment:Taking Taiyuan City as an example

The temperature and velocity fields of five common forms for urban green space pattern were simulated by CFD and remote sensing technology,in order to find the influence extent and the influence way of green space pattern on urban thermal environment.The result shows that it is feasible that CFD numerical simulation technology can be introduced to the study of urban thermal environment,with remote sensing technology to modify the parameters of the CFD model.From the simulation analysis of urban thermal envi...