Thermophysics and Aeromechanics

, Volume 23, Issue 5, pp 677–692 | Cite as

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

  • A. F. KurbatskiiEmail author
  • L. I. Kurbatskaya


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.


turbulence planetary boundary layer urban heat island large-scale circulation numerical modeling 


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© Pleiades Publishing, Ltd. 2016

Authors and Affiliations

  1. 1.Khristianovich Institute of Theoretical and Applied Mechanics SB RASNovosibirskRussia
  2. 2.Institute of Computational Mathematics and Mathematical Geophysics SB RASNovosibirskRussia

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