Isogeometric analysis of fluid-saturated porous media including flow in the cracks

Vignollet, J., May, S. and de Borst, R. (2016) Isogeometric analysis of fluid-saturated porous media including flow in the cracks. International Journal for Numerical Methods in Engineering, 108(9), pp. 990-1006. (doi: 10.1002/nme.5242)

Abstract

An isogeometric model is developed for the analysis of fluid transport in pre-existing faults or cracks that are embedded in a fluid-saturated deformable porous medium. Flow of the interstitial fluid in the porous medium and fluid transport in the discontinuities are accounted for and are coupled. The modelling of a fluid-saturated porous medium in general requires the interpolation of the displacements of the solid to be one order higher than that of the pressure of the interstitial fluid. Using order elevation and Bézier projection, a consistent procedure has been developed to accomplish this in an isogeometric framework. Particular attention has also been given to the spatial integration along the isogeometric interface element in order to suppress traction oscillations that can arise for certain integration rules when a relatively high dummy stiffness is used in a poromechanical model.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Vignollet, Dr Julien and May, Mr Stuart and De Borst, Professor Rene
• Authors: Vignollet, J., May, S., and de Borst, R.
• College/School: College of Science and Engineering > School of Engineering; College of Science and Engineering > School of Engineering > Infrastructure and Environment
• Journal Name: International Journal for Numerical Methods in Engineering
• Publisher: Wiley
• ISSN: 0029-5981
• ISSN (Online): 1097-0207
• Published Online: 28 March 2016
• Copyright Holders: Copyright © 2016 The Authors
• First Published: First published in International Journal for Numerical Methods in Engineering 108(9): 990-1006
• Publisher Policy: Reproduced under a Creative Commons License