Modelling hydraulic fractures in porous media using flow cohesive interface elements

Nguyen, Vinh Phu, Lian, Haojie, Rabczuk, Timon and Bordas, Stephane Pierre Alain ORCID: https://orcid.org/0000-0001-8634-7002 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:	02 Nov 2022 11:18
URI:	https://orca.cardiff.ac.uk/id/eprint/101539

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