Codice | 44/2011 |
Titolo | Numerical modelling of multiphase subsurface flow in the presence of fractures |
Data | 2011-12-16 |
Autore/i | Fumagalli,A.; Scotti,A. |
Link | Download full text | Pubblicato | CAIM |
Abstract | Subsurface flow is influenced by the heterogeneity of the porous medium
and in particular by the presence of faults and large fractures which act as
preferential paths for the flow. In this work we present a robust numerical
method for the simulation of two-phase Darcy flows in heterogeneous media
and propose a possible treatment of fractures by means of the extended
finite element method, XFEM, and the coupling with a reduced model for
the flow inside the fracture. The use of extended finite elements allows to
handle fractures that are non conforming with the underlying mesh, thus
increasing the applicability of the proposed scheme to the simulation of
realistic problems such as oil migration in fractured basins, CO2 storage or
pollutant dispersion in groundwater flows.
|
|