Fuzzy model: Time dependent dispersion in rivers

Abstract

In this paper, two dimensional dispersion equation is considered with time dependent along uniform flow. The solution of time dependent dispersion equation is converted in fuzzy environment. The fuzzy arithmetic used to simulate the fuzzy relation in modeling river water qual-ity. The parameters of two dimensional dispersion equation of water quality model are assumed as trapezoidal fuzzy numbers. From fuzzy model the concentrations can be obtained by corresponding to the specified α-cut technique and arithmetic operations of trapezoidal fuzzy numbers. Solution of Fuzzy model is compared with determinate solution of dispersion equation. Copyright © 2009 by IICAI.