Pollutant Dispersion in the Atmosphere: A Solution Considering Nonlocal Closure of Turbulent Diffusion

D. Buske (), M. T. B. Vilhena (), B. E. J. Bodmann (), R. S. Quadros () and T. Tirabassi ()
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D. Buske: Federal University of Pelotas
M. T. B. Vilhena: Federal University of Rio Grande do Sul
B. E. J. Bodmann: Federal University of Rio Grande do Sul
R. S. Quadros: Federal University of Pelotas
T. Tirabassi: Institute of Atmospheric Sciences and Climate of National Council of Research

Chapter Chapter 9 in Integral Methods in Science and Engineering, 2015, pp 99-110 from Springer

Abstract: Abstract A special attention has been given to the issue of searching analytical solutions for the advection-diffusion equation in order to simulate the pollutant dispersion in the Atmospheric Boundary Layer (ABL). In this work we take a step forward assuming a transient three-dimensional problem with nonlocal closure of the turbulent diffusion. The problem of closing the turbulence in the advection-diffusion equation is modified considering a generic equation for the turbulent diffusion. The countergradient term in the turbulence closure made additional terms to appear in the advection-diffusion equation and these terms are related to the asymmetrical transport in the convective boundary layer. This new equation is solved by the 3D-GILTT method. Numerical results and statistical comparisons with experimental data are presented.

Keywords: Advection-diffusion equation; Analytical solution; Nonlocal closure. (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-319-16727-5_9

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DOI: 10.1007/978-3-319-16727-5_9

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