Pollutant dispersal in an air-water system mathematical modeling numerical aproximation and computational simulations / Dispersão de poluentes num sistema ar-agua : modelagem matematica, aproximação numerica e simulação computacional

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

This work considers a three-dimensional air-water system pollution discharge problem, modelling it with a system of partial differential equations which includes both the diffusionadvection evolutionary and Stoke s equations. Appropriate boundary conditions are considered, including for the air-water interface, and special attention is dedicated to existence and uniqueness results. ln terms of the numerical approximation, space discretization is undertaken with three-dimensional second-order finite elements, and, in time, a Crank-Nicolson scheme is adopted. A priori estimates are given for the continuous Galerkin and for the GalerkinjCrankNicolson approximations. A numerical algorithm is presented and the qualitative visual output is used to emphasize the potential for simulating and discussing pollution discharge strategies.

ASSUNTO(S)

simulação por computador equações diferenciais parciais partial differential equations metodo dos elementos finitos impacto ambiental computational simulation finite element method environmental impact

Documentos Relacionados