Modelagem e simulações dos fluxos de CO2 em áreas alagadas do Pantanal mato-grossense

• Autor(a) principal: Siqueira, Jesumar Lopes
• Data de Publicação: 2017
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UFMT
• Texto Completo: http://ri.ufmt.br/handle/1/2008
• topic: Dispersão de CO2; Modelagem ambiental; Elementos finitos; Simulação computacional; CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA; CO2 dispersion; Environmental modeling; Finite elements wetland; Computer simulation

In this work a study of the flow of carbon dioxide in the Chacororé Bay in the region of Pantanal Mato-grossense is carried out. The objective of this work is to propose a two dimensional mathematical model and the simulation of scenarios, in order to describe the process of concentration of carbon dioxide in the atmospheric, in function of the physical phenomena considered. The model was elaborated from a general diffusion-advection equation, of which the existence and uniqueness of solution to the problem in its variational formulation was obtained. The numerical approximation was obtained by computational methods with spatial discretization through the Finite Element Method (FEM), by Galerkin Standard (spatial discretization) and Crank-Nicolson (for temporal discretization). The use of computational simulations allowed the presentation of scenarios, where it was possible to verify the behavior for the dispersion of the concentration of carbon dioxide in the study area, which is fundamental to understand the effects of the change in the global and regional biogeochemical cycles, as well as the role of the Tropical terrestrial ecosystems in the carbon dioxide balance.