Numerical Simulation of Groundwater Contamination

In this study, finite difference modelling technique is used to develop a simulation program that can be used for groundwater contamination problems. Simulation program is written in C++ programming language and runs on personal computers having Windows95 operating system. Simulation program supplies an interactive user interface containing useful tools for preprocessing and postprocessing of the data. Numerical models are capable of simulating two-dimensional areal aquifer systems with various conditions. Finite difference equations are derived by using vector volumes. Groundwater flow equations and advective-dispersive contaminant transport equations are solved in an uncoupled manner. Iterative alternating direction implicit method is used with Gauss elimination method to obtain solutions. Solution codes for the flow equation are implemented from previous researchers' studies in this field. Variable grid generation is added to the implemented codes. Program is capable of displaying head and concentration distributions, velocity fields on the discretized aquifer domain and is supplied with various output file options for the solutions.