Uma nova abordagem na equação de dispersão de poluentes atmosféricos usando a transformação gás partícula e a difusão anômala

• Ano de defesa: 2019
• Autor(a) principal: Santos, Cassia Aparecida Gobeti dos
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Espírito Santo; BR; Doutorado em Engenharia Ambiental; Centro Tecnológico; UFES; Programa de Pós-Graduação em Engenharia Ambiental
• Palavras-chave em Português: Atmospheric dispersion; Advection-diffusion equation; Primary and secondary pollutants; Fractional derivatives; Dispersão atmosférica; Equação de advecção-difusão; Poluentes primário e secundário; Derivada fracionária; Engenharia sanitária; 628
• Link de acesso: http://repositorio.ufes.br/handle/10/11163

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.