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Proceedings Paper

Numerical model of the urban heat island in a calm and stably stratified environment
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Paper Abstract

The RANS high close approach for the turbulent fluxes of momentum, heat and mass for simulating of the circulation structure and dispersion pollutant over the urban heat island in a stably stratified environment under nearly calm conditions is formulated. The turbulent fluxes of momentum − uiuj , heat −uiθ and mass −uic in this approach determined from the gradient diffusion type models with the turbulent kinetic energy (TKE), its spectral consumption (or dissipation), the temperature variance and the covariance for cθ as parameters which are obtained from transport equations. Such the RANS approach minimizes difficulties in the turbulent transport modeling in a stably stratified environment and reduces efforts needed for the numerical implementation of the numerical model. The simulation results demonstrates that the three-four equations RANS approach is able to predict the structure of turbulent circulation flow induced by the heat island that is in good agreement with the experimental data.

Paper Details

Date Published: 19 November 2015
PDF: 10 pages
Proc. SPIE 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics, 968058 (19 November 2015); doi: 10.1117/12.2203154
Show Author Affiliations
A. Kurbatskiy, Khristianovich Institute of Theoretical and Appl. Mech. (Russian Federation)
L. Kurbatskaya, Inst. Computational Math. and Mathematical Geophysics (Russian Federation)

Published in SPIE Proceedings Vol. 9680:
21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics
Oleg A. Romanovskii, Editor(s)

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