Reference : Enriched finite elements for branching cracks in deformable porous media

	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Geological, petroleum & mining engineering
	Focus Areas :	Computational Sciences
	To cite this reference:	http://hdl.handle.net/10993/21330

Title :	Enriched finite elements for branching cracks in deformable porous media
Language :	-
Author, co-author :	Sheng, M. [State Key Laboratory of Petroleum Resources and Prospecting, China University of PetroleumBeijing, China]
	Li, G. [State Key Laboratory of Petroleum Resources and Prospecting, China University of PetroleumBeijing, China]
	Shah, S. [Well Construction Technology Center, University of OklahomaNorman, OK, United States]
	Lamb, A. R. [Intelligent Structural Integrity Management (IntelliSIMS)Houston, TX, United States]
	Bordas, Stéphane [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit]
Publication date :	2015
Journal title :	Engineering Analysis with Boundary Elements
Publisher :	Elsevier Ltd
Volume :	50
Pages :	435-446
Peer reviewed :	Yes (verified by ORBilu)
Audience :	International
ISSN :	09557997
Keywords :	[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
Abstract :	[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.
Funders :	51210006, NSFC, National Natural Science Foundation of China
Target :	Researchers ; Professionals ; Students ; General public ; Others
Permalink :	http://hdl.handle.net/10993/21330
DOI :	10.1016/j.enganabound.2014.09.010
Framework Programme / European Project :	FP7 ; 279578 - REALTCUT - Towards real time multiscale simulation of cutting in non-linear materials with applications to surgical simulation and computer guided surgery

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