基于传热学的街谷热环境模拟与分析

hermal environment simulation over urban canopy layer plays an important part in remote sensing of environment. In this paper, a finite difference method is utilized to simulate the surface temperature within urban street canyon which is a main component of urban canopy layer. In such simulation, variance of surface temperature depending on time will be successfully worked out using some simplified geographical background coefficients as inputs. Judging the result of simulation, different orientation of canyon leads to different variation of surface temperature. These differences are both time concerning and space concerning. Hence, it is concluded that by modifying geometric characteristics of buildings, orientation of street canyon can be changed, therefore thermal environment within urban street canyon can be changed.