A New Mixed Finite Element Method for Biot Consolidation Equations

A New Mixed Finite Element Method for Biot Consolidation Equations

Year:    2020

Author:    Luoping Chen, Yan Yang

Advances in Applied Mathematics and Mechanics, Vol. 12 (2020), Iss. 6 : pp. 1520–1541

Abstract

In this paper, we study a new finite element method for poroelasticity problem with homogeneous boundary conditions. The finite element discretization method is based on a three-variable weak form with mixed finite element for the linear elasticity, i.e., the stress tensor, displacement and pressure are unknown variables in the weak form. For the linear elasticity formula, we use a conforming finite element proposed in [11] for the mixed form of the linear elasticity and piecewise continuous finite element for the pressure of the fluid flow. We will show that the newly proposed finite element method maintains optimal convergence order.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/aamm.OA-2019-0174

Advances in Applied Mathematics and Mechanics, Vol. 12 (2020), Iss. 6 : pp. 1520–1541

Published online:    2020-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    22

Keywords:    Biot consolidation equations linear elasticity finite element method convergence analysis.

Author Details

Luoping Chen

Yan Yang

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