Abstract
Numerical evaluation is useful for studying pollution transport in groundwater, and hydraulic parameters play an important role in performing numerical simulation. In this study, multi-level dilution tests were performed to evaluate pore velocity, hydraulic conductivity and dispersion coefficient at a nitrate pollution site. Based on the results obtained from the multi-level dilution test, three-dimensional numerical simulations were conducted, and the attenuation curves of tracer concentration at different soil depths were reproduced. In the numerical simulations, three-dimensional artificial heterogeneous hydraulic conductivity fields generated by the stochastic fractal model were used. Results of the simulations suggest that reproduction of the attenuation curves could be possible by considering field heterogeneity.
