<< Click to Display Table of Contents >> Navigation:  Appendix A Examples > Example 13: Comparison with Analytical Method

The results of the program are compared to the results obtained by an analytical solution given by TDAST. The TDAST program was developed by Javandel et al. (1984), and is for a 2-dimensional plane dispersion problems in an infinitely deep porous media. Concentrations obtained by both methods are in close agreement for a dispersion coefficient of 0.01 m2/a. However, at higher dispersion coefficients, for example 5 or 10 m2/a, the methods are not in agreement. This is because for the geometry and time frame considered in this problem, a 2-dimensional solution is required and POLLUTEv7 considers only 1-dimensional migration in the layer below the source.