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A New Projection-Based Stabilized Virtual Element Approximation for Three-Field Poroelasticity
Xin Liu and Zhangxin Chen

J. Comp. Math. DOI: 10.4208/jcm.2404-m2023-0150

Publication Date : 2024-07-24

  • Abstract

In this paper, we develop a fully discrete virtual element scheme based on the local pressure projection stabilization for a three-field poroelasticity problem with a storage coefficient $c_0 ≥ 0.$ We not only provide the well-posedness of the proposed scheme by proving a weaker form of the discrete inf-sup condition, but also show optimal error estimates for all unknowns, whose generic constants are independent of the Lamé coefficient $λ.$ Moreover, our proposed scheme avoids pressure oscillation and applies to general polygonal elements, including hanging-node elements. Finally, we numerically validate the good performance of our virtual element scheme.

  • Copyright

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