Solute Dispersion Along Unsteady Groundwater Flow in a Semi-infinite Homogeneous Aquifer Using Linguistic Hedge by Mamdani Model

摘要

In the present study, the analytical solutions for dispersion of contaminants along unsteady flow of groundwater through semi-infinite aquifer are represented by fuzzy linguistic hedges. The sources of pollution are both a point input at origin and a spatially distributed background source. The analytical solutions thus obtained are put into Mamdani model with different linguistic variables, and the model thus formed gives the result of solute concentration in literal sense in different point of time and space. The MATLAB code has been generated to simulate the Mamdani Model and to find the fuzziness of the solution of AD equation (Advection-Dispersion Equation) along unsteady flow.