Análise de risco em rios, sujeito a lançamento de afluentes através da aplicação da Teoria Fuzzy

Abstract

In this work, it was developed a methodology that combines the Fuzzy Theory with the transport processes of pollutant, with the objective of evaluating the risk of a river to suffer a process of environmental degradation. The methodology uses the Fuzzy Fheory to get the solution of the diffusion and advective equation, in a fuzzy structure and, in such way, to transform a concentration field, variable in the time and space, in a field of membership functions, also variables in time and in space. Along the study, there was the need of the development of a computational program, in FORTRAN language, that allowed the accomplishment of a group of simulations for the more presents sceneries found in the relationships between man and Natural River. The results allowed establishing some interesting analyses with regard to the behavior of a risk field for several proposed situations. The results allowed concluding that the application of the Fuzzy Theory, in the hydrodynamic systems, to evaluate risk of environmental degradation, in the water systems, has great perspectives to turn, in a close future, in an important alternative in the search of a better analysis for the programs concern with Water Resources Management.