Numerical simulator
The numerical simulator used for the simulations in this study is the
EOS3 module of the integral finite difference code named TOUGH2 (Pruess
et al., 1999). TOUGH2 has been used successfully in many geothermal and
nuclear waste disposal studies (e.g., Sonnenthal and Bodvarsson, 1999;
Haukwa et al., 2003). The EOS3 module of the code is developed for
simulating the transport processes of water, air, and heat in porous
media. As a result, it can be used to simulate unsaturated infiltration
in soil.