Turbulent circulation above the surface heat source in a stably stratified environment

被引：0
作者：
A. F. Kurbatskii
L. I. Kurbatskaya
机构：
[1] Khristianovich Institute of Theoretical and Applied Mechanics SB RAS,
[2] Institute of Computational Mathematics and Mathematical Geophysics SB RAS,undefined
来源：
Thermophysics and Aeromechanics | 2016年 / 23卷
关键词：
turbulence; planetary boundary layer; urban heat island; large-scale circulation; numerical modeling;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The results of the numerical modeling of turbulent structure of the penetrating convection above the urban heat island with a small aspect ratio in a stably stratified medium at rest are presented. The gradient diffusion representations for turbulent momentum and heat fluxes are used, which depend on three parameters — the turbulence kinetic energy, the velocity of its spectral expenditure, and the dispersion of temperature fluctuations. These parameters are found from the closed differential equations of balance in the RANS approach of turbulence description. The distributions of averaged velocity and temperature fields as well as turbulent characteristics agree well with measurement data.
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页码：677 / 692
页数：15
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