城市大气边界层的数值研究

The Numerical Study of Urban Atmospheric Boundary Layer

本文利用能量闭合的二维非线性、非定常模式,结合地面热量平衡方程,研究了城市热岛和城市热岛环流以及其它相关的城市边界层参量的发展演变规律;同时探讨了在城市污染面源的情况下,污染物的扩散、输送问题.模拟结果得到了天津市城市热岛观测资料的证实.

Combining with the surface heat balance equation, a nonlinear and nonsteady two-dimensional numerical model, which is closed by energy method, is used to study the evolution of urban heat island and circulation as well as other parameters related to urban boundary layer. The transportation and dispersion of pollutant is also discussed in the case of urban pollutant area source. The simulation results are verified by the observation data on urban heat island in Tianjin.