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

In: Integral Methods in Science and Engineering

Author

Listed:
  • 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)

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.

Suggested Citation

  • D. Buske & M. T. B. Vilhena & B. E. J. Bodmann & R. S. Quadros & T. Tirabassi, 2015. "Pollutant Dispersion in the Atmosphere: A Solution Considering Nonlocal Closure of Turbulent Diffusion," Springer Books, in: Christian Constanda & Andreas Kirsch (ed.), Integral Methods in Science and Engineering, edition 1, chapter 0, pages 99-110, Springer.
    • Handle: RePEc:spr:sprchp:978-3-319-16727-5_9
    DOI: 10.1007/978-3-319-16727-5_9
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