  The aim of this study is to compare numerical methods for the simulation of
single-phase flow and transport in fractured media, described here by means of
the Discrete Fracture Network (DFN) model. A Darcy problem is solved to compute
the advective field, then used in a subsequent time dependent
transport-diffusion-reaction problem. The numerical schemes are benchmarked in
terms of flexibility in handling geometrical complexity, mass conservation and
stability issues for advection dominated flow regimes. To this end, three
benchmark cases have been specifically designed and are here proposed,
representing some of the most critical issues encountered in DFN simulations.
