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Modelling hydraulic fractures in porous media using flow cohesive interface elements

Nguyen, Vinh Phu, Lian, Haojie, Rabczuk, Timon and Bordas, Stephane Pierre Alain 2017. Modelling hydraulic fractures in porous media using flow cohesive interface elements. Engineering Geology 225 , pp. 68-82. 10.1016/j.enggeo.2017.04.010

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Abstract

This paper revisits the problem of computational modelling of a fluid-driven fracture propagating in a permeable porous medium using zero-thickness flow cohesive interface elements. Both cases of continuous and discontinuous pressure field across the fractures are implemented in a unified formulation. The paper provides computational aspects of hydraulic fracture modelling such as mesh generation, execution time, convergence and numerical integration issues. We show that Newton-Cotes quadrature must be used for quadratic flow cohesive interface elements at least for the presented problems. Our simulations exhibit the so-called intermittent crack tip advancement as recently confirmed in the literature. This paper is addressed to researchers who would like to have a quick working implementation of the zero-thickness flow cohesive interface elements for simulating hydraulic fracturing processes with finite elements.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords: Hydraulic fractures; Finite element method; Flow cohesive interface elements; Porous media
Publisher: Elsevier
ISSN: 0013-7952
Date of Acceptance: 14 April 2017
Last Modified: 03 Jan 2018 14:52
URI: http://orca.cf.ac.uk/id/eprint/101539

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