Low Order Nonconforming Rectangular Finite Element Methods for Darcy-Stokes Problems

Low Order Nonconforming Rectangular Finite Element Methods for Darcy-Stokes Problems

Year:    2009

Journal of Computational Mathematics, Vol. 27 (2009), Iss. 2-3 : pp. 400–424

Abstract

In this paper, we consider lower order rectangular finite element methods for the singularly perturbed Stokes problem. The model problem reduces to a linear Stokes problem when the perturbation parameter is large and degenerates to a mixed formulation of Poisson's equation as the perturbation parameter tends to zero. We propose two 2D and two 3D nonconforming rectangular finite elements, and derive robust discretization error estimates. Numerical experiments are carried out to verify the theoretical results.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/2009-JCM-8579

Journal of Computational Mathematics, Vol. 27 (2009), Iss. 2-3 : pp. 400–424

Published online:    2009-01

AMS Subject Headings:   

Copyright:    COPYRIGHT: © Global Science Press

Pages:    25

Keywords:    Darcy-Stokes problem Finite element Uniformly stable.