This Homepage presents the background, papers, and currently available software by the CTRW group.

If you have suggestions for modifications and/or improvements, or if you have a problem that could be addressed by our software, please do contact us.

Interesting projects and motivated colleagues are always welcome!!!

Looking for the old site? You can find it here.

Groundwater movement in naturally fractured and heterogeneous porous aquifers is highly complex, due to a strongly varying velocity field with multiscale correlation lengths. A key problem is how to describe tracer and contaminant movement in such systems. Realistic quantification of this movement is complicated by the uncertainty in characterization of aquifer properties.

CTRW theory accounts for the often observed non-Fickian (or scale-dependent) dispersion behavior that cannot be properly quantified by using the advection-dispersion equation (ADE). In fact, the ADE is a special, highly restrictive form of the CTRW formulation. The solutions provided here are valid for a wide range of transport regimes and dispersive behaviors.