Uma nova abordagem na equação de dispersão de poluentes atmosféricos usando a transformação gás partícula e a difusão anômala
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Data
2019-03-22
Autores
Santos, Cassia Aparecida Gobeti dos
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Universidade Federal do Espírito Santo
Resumo
In this research it is proposed a new equation of fractional diffusion-advection which describes the atmospheric dispersion of contaminants including the formation of secondary pollutants (sulfur dioxide and sulfate) and their removal processes in the atmosphere. It is proposed to use the methodology used by Alam and Seinfeld (1981), which uses linear algebra to decouple the system of equations from the secondary pollutant. To solve the equations found, it uses the ADMM (Advection Diffusion Multilayer Model) method, which consists of a semi-analytical solution based on the discretization of the planetary boundary layer (CLP) in sub-layers, so that the diffusion-advection equation can be solved using the Laplace transform and the technician GITT in a planetary boundary layer vertically nonhomogeneous. Simulations proves the influence of dry and wet deposition, including the order of the derivative, on the concentration of primary and secondary pollutants, representing step forward in the understanding of the pollutants dispersion in the atmosphere with lower computational costs due to semi-analytical solution characteristic.
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Atmospheric dispersion , Advection-diffusion equation , Primary and secondary pollutants , Fractional derivatives , Dispersão atmosférica , Equação de advecção-difusão , Poluentes primário e secundário , Derivada fracionária