Uma aproximação analítica tridimensional para um problema de dispersão de efluentes de foguetes em uma nuvem estabilizada

Abstract

The aim of present master dissertation is to simulate, after a thermal stabilization period, the dispersion of an exhaust cloud generated in rocket and space vehicle launches. For this end, a three-dimensional time-dependent model based at advectiondiffusion equation will be considered and contains the terms of gravitational settling and chemical decay. The boundary conditions of heat null flux at the top of atmospheric boundary layer and deposition process in the surface were used. The source condition simulates the pollutant emission time efect through a Heaviside function. Were realised simulations considering a punctual continuos and volume source approach. The eddy parametrizations were obtained from existing works of dispersion pollution literature. The solution was encontered using the three-dimensional GILTT method described in some works used as reference. To validate the algorithm and for sensibility simulations the data of Copenhagen experiments and micrometeorological data of Centro de Lanc¸amento de Alcˆantara (CLA) obtained from the CHUVA project were used.