and homogeneity. In turn, those differences fundamentally alter the balance between capillary, gravity, and The infiltration of water into unsaturated geologic media is an viscous forces that controls the occurrence and behavior immiscible displacement process that is unstable with respect to gravity and can thus lead to the formation of gravity-driven fingers. Where of gravity-driven fingers. ...

A tracer test was carried out in a geothermal doublet system to study the injection behavior of a developed reservoir known to be fractured. The doublet produces about 320 gpm of 160' F heating and then injected; the wells are spaced 250 ft apart. observed in 2 hours and 45 minutes in the production well, indicating fracture flow. However, the tracer concentrations were low and indicated porous...

We investigate the discretization of Darcy flow through fractured porous media on general meshes. We consider a hybrid dimensional model, invoking a complex network of planar fractures. The model accounts for matrix-fracture interactions and fractures acting either as drains or as barriers, i.e. we have to deal with pressure discontinuities at matrix-fracture interfaces. The numerical analysis ...

Abstract Dimensional reduction strategy is an effective approach to derive reliable conceptual models describe flow in fractured porous media. The fracture aperture several orders of magnitude smaller than the characteristic size (e.g., length fracture) physical problem. We identify ratio as small parameter

This paper presents a fracture mapping (FM) approach combined with the extended finite element method (XFEM) to simulate coupled deformation and fluid flow in fractured porous media. Specifically, the method accurately represents the impact of discrete fractures on flow and deformation, although the individual fractures are not part of the finite element mesh. A key feature of FM-XFEM is its ab...

This work presents recent progress in phase-field-based fracture modeling in heterogeneous porous media. Existing algorithms that have been developed in the last years are extended to tackle three-dimensional configurations. Our solution technique is formulated in terms of a nested Newton loop that combines a primal-dual active set method (required for treating the crack irreversibility) and a ...

Experimental Results Applications for flow in porous media include: • Groundwater pollution • Fracking and flow in fracture networks • Contaminant transport Key challenges: • High uncertainty in physical data • Monte Carlo framework with multiple realizations to approximate uncertainty • Full physics simulations in Monte Carlo framework is too expensive for practical problems Project aims • Mac...

This paper deals with fracture mechanics in periodically perforated domains. Our aim is to provide a variational model for brittle porous media. For the sake of simplicity we will restrict our analysis to the case of anti-planar elasticity. Given the perforated domain Ωε ⊂ R N (ε being an internal scale representing the size of the periodically distributed perforations), we will consider a tota...

A numerical model has been developed for the large-scale simulation of solute transport in discretelyfractured porous media. A generic finite elements code, MEF++, has been used to account for simultaneous flow and transport in 2D fracture and 3D porous medium elements. Equations for the fractures and the porous medium are solve separately but are coupled with a mass transfer term. This mass tr...

in this paper wave transformation in a submerged sloped breakwater and its hydraulic performance was simulated by developing a numerical model in fortran. the code was established by combining porous flow and a two-phase model using vof method. modified navier-stokes and k-ε equations implemented to the model to simulate the flow in porous media. cut cell method was modified to simulate fluid t...