[en] Crack ; Finite element method ; Porous media ; Cracks ; Deformation ; Flow of fluids ; Fracture ; Porous materials ; Deformable porous media ; Discrete fractures ; Discretization scheme ; Enriched finite elements ; Extended finite element method ; Intersecting fractures ; Numerical approaches ; Numerical experiments ; Coupled circuits
[en] In this paper, we propose and verify a numerical approach to simulate fluid flow in deformable porous media without requiring the discretization to conform to the geometry of the sealed fractures (possibly intersecting). This approach is based on a fully coupled hydro-mechanical analysis and an extended finite element method (XFEM) to represent discrete fractures. Convergence tests indicate that the proposed scheme is both consistent and stable. The contributions of this paper include: (1) a new junction enrichment to describe intersecting fractures in deformable porous media; (2) the treatment of sealed fractures. We employ the resulting discretization scheme to perform numerical experiments, to illustrate that the inclination angles of the fractures and the penetration ratio of the sealed fractures are two key parameters governing the flow within the fractured porous medium.
51210006, NSFC, National Natural Science Foundation of China
Researchers ; Professionals ; Students ; General public ; Others
FP7 ; 279578 - REALTCUT - Towards real time multiscale simulation of cutting in non-linear materials with applications to surgical simulation and computer guided surgery