Authors | J. B. Haga, H. Osnes and H. P. Langtangen |
Title | On the Causes of Pressure Oscillations in Low-Permeable and Low-Compressible Porous Media |
Afilliation | Scientific Computing, Scientific Computing, Scientific Computing |
Status | Published |
Publication Type | Journal Article |
Year of Publication | 2011 |
Journal | International Journal for Numerical and Analytical Methods in Geomechanics |
Number | online |
Date Published | July |
Abstract | Non-physical pressure oscillations are observed in finite element calculations of Biot's poroelastic equations in low-permeable media. These pressure oscillations may be understood as a failure of compatibility between the finite element spaces, rather than elastic locking. We present evidence to support this view by comparing and contrasting the pressure oscillations in low-permeable porous media with those in low-compressible porous media. As a consequence, it is possible to use established families of stable mixed elements as candidates for choosing finite element spaces for Biot{'}s equations. |
DOI | 10.1002/nag.1062 |
Citation Key | Simula.simula.18 |