Dispersão de contaminantes em rios e canais através do método GILTT

Abstract

In today's context of water pollution and scarcity, several research have studied the issue of pollutants dispersion in aquatic environments. Given that experimental research are expensive and present operational problems, mathematical modeling proves a useful tool for understanding these phenomena. The aim of this work is to present an analytical solution for advection-diffusion equation, which models the problem of contaminant dispersion in rivers and canals. Therefore, are considered the two-dimensional, in the longitudinal vertical plane, and three-dimensional models in steady state with velocity profiles and turbulent diffusivity coefficients non-uniform. The approach for the resolution of models is the GILTT method (Generalized Integral Laplace Transform Technique). Finally, are presented numerical simulations and some comparisons with experimental data and numerical results available in literature.