To main content

Iterative solvers for Biot model under small and large deformations

Abstract

We consider L-scheme and Newton-based solvers for Biot model under large deformation. The mechanical deformation follows the Saint Venant-Kirchoff constitutive law. Furthermore, the fluid compressibility is assumed to be non-linear. A Lagrangian frame of reference is used to keep track of the deformation. We perform an implicit discretization in time (backward Euler) and propose two linearization schemes for solving the non-linear problems appearing within each time step: Newton’s method and L-scheme. Each linearization scheme is also presented in a monolithic and a splitting version, extending the undrained split methods to non-linear problems. The convergence of the solvers, here presented, is shown analytically for cases under small deformation and numerically for examples under large deformation. Illustrative numerical examples are presented to confirm the applicability of the schemes, in particular, for large deformation.
Read the publication

Category

Academic article

Language

English

Author(s)

  • Manuel Antonio Borregales Reveron
  • Kundan Kumar
  • Jan Martin Nordbotten
  • Florin Adrian Radu

Affiliation

  • SINTEF Digital / Mathematics and Cybernetics
  • Karlstad University
  • University of Bergen

Year

2020

Published in

Computational Geosciences

ISSN

1420-0597

Volume

25

Issue

2

View this publication at Norwegian Research Information Repository