Analysis of the PSPG method for the transient Stokes' problem

作者：Burman Erik^*; Fernandez Miguel A

来源：Computer Methods in Applied Mechanics and Engineering, 2011, 200(41-44): 2882-2890.

DOI：10.1016/j.cma.2011.05.001

• Transient Stokes'
• Finite element method
• PSPG
• Stabilization
• Stability
• Time-discretization

We propose a new analysis for the PSPG method applied to the transient Stokes' problem. Stability and convergence are obtained under different conditions on the discretization parameters depending on the approximation used in space. For the pressure we prove optimal stability and convergence only in the case of piecewise affine approximation under the standard condition on the time-step. Finally we show that the stability problems of the PSPG-method can be circumvented using an appropriate discrete reconstruction of the Laplace operator.

• 出版日期2011
• 单位INRIA