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

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Thermophysics and Aeromechanics Aims and scope

Abstract

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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Authors and Affiliations

  1. Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia

    A. F. Kurbatskii

  2. Institute of Computational Mathematics and Mathematical Geophysics SB RAS, Novosibirsk, Russia

    L. I. Kurbatskaya

Authors
  1. A. F. Kurbatskii
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  2. L. I. Kurbatskaya
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Corresponding author

Correspondence to A. F. Kurbatskii.

Additional information

The work was financially supported by the Russian Foundation for Basic Research (Grant No. 13-05-00006 and partially No. 14-01-00125) and Program for Basic Research of SB RAS No. II. 2П.

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Kurbatskii, A.F., Kurbatskaya, L.I. Turbulent circulation above the surface heat source in a stably stratified environment. Thermophys. Aeromech. 23, 677–692 (2016). https://doi.org/10.1134/S0869864316050061

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  • DOI: https://doi.org/10.1134/S0869864316050061

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