2D and 3D numerical analysis of fluid pressure induced fracture

S. Secchi, B. A. Schrefler

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Simulation of 2D and 3D hydraulic fracturing in fully-saturated, porous media is presented. The discrete fracture/s is/are driven by the fluid pressure. A cohesive fracture model is adopted where, in the 3D case, the fracture follows the face of the element around the fracture tip which is closest to the normal direction of the maximum principal stress at the tip. While in the 2D setting, the fracture follows directly the direction normal to the maximum principal stress. No predetermined fracture path is needed. This requires continuous updating of the mesh around the crack tip to take into account the evolving geometry. The updating of the mesh is obtained by means of an efficient mesh generator based on Delaunay tessellation. The governing equations are written in the framework of porous media mechanics and are solved numerically in a fully coupled manner. Numerical examples dealing with well injection in a geological setting and hydraulic fracture in a concrete dam conclude the paper.

Original languageEnglish (US)
Title of host publicationPoromechanics V - Proceedings of the 5th Biot Conference on Poromechanics
Pages2093-2102
Number of pages10
DOIs
StatePublished - Nov 15 2013
Event5th Biot Conference on Poromechanics, BIOT 2013 - Vienna, Austria
Duration: Jul 10 2013Jul 12 2013

Other

Other5th Biot Conference on Poromechanics, BIOT 2013
CountryAustria
CityVienna
Period7/10/137/12/13

ASJC Scopus subject areas

  • Mechanics of Materials

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