@article{10867,
  author = {Joachim Haga and Harald Osnes and Hans Langtangen},
  title = {On the Causes of Pressure Oscillations in Low-Permeable and Low-Compressible Porous Media},
  abstract = {Non-physical pressure oscillations are observed in finite element calculations of Biot{\textquoteright}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{{\textquoteright}}s equations.},
  year = {2011},
  journal = {International Journal for Numerical and Analytical Methods in Geomechanics},
  number = {online},
  month = {July},
  doi = {10.1002/nag.1062},
}