Simulação da dispersão de poluentes considerando o termo de contragradiente na CLC

Abstract

This work presents an application of the ADMM method (Advection Diffusion Multilayer Method) to simulate the dispersion of pollutants in the atmosphere with a different approach in the usual way for the term of countergradient. Therefore, it is found a semi-analytical solution to the advection-diffusion equation with a non-Fickian closure that generate more one term in equation in relation to the simulations that solve the problem of closing of the equation with the Fickian formulation. Thus, besides the atmospheric turbulence is parameterized by the diffusion coefficient making closer model of physical reality, will also be present a countergradient term in the differential equation of the model, which will address the physics of turbulence in a more wide way. Finally, the performance will be evaluated in this model using experimental data in the literature. Furthermore, the model that has the term of countergradient will be compared with another who ignores this term shows that the dispersion of pollutants has influence of countergradient term.