Numerical Solotion of a Problem of Fluid Filtration in a Viscoelastic Porous Medium

УДК 519.6+536

  • R.A. Virts Altai State University (Barnaul, Russia) Email: virtsrudolf@gmail.com
  • A.A. Papin Altai State University (Barnaul, Russia) Email: papin@math.asu.ru
  • W.A. Weigant Bonn University (Bonn, Germany) Email: w-weigant@t-online.de
Keywords: porosity, filtration, poroelasticity, Darcy law

Abstract

The paper considers a model for filtering a viscous incompressible fluid in a deformable porous medium. The filtration process can be described by a system consisting of mass conservation equations for liquid and solid phases, Darcy's law, rheological relation for a porous medium, and the law of conservation of balance of forces. This paper assumes that the poroelastic medium has both viscous and elastic properties. In the one-dimensional case, the transition to Lagrange variables allows us to reduce the initial system of governing equations to a system of two equations for effective pressure and porosity, respectively. The aim of the work is a numerical study of the emerging initial-boundary value problem. Paragraph 1 gives the statement of the problem and a brief review of the literature on works close to this topic. In paragraph 2, the initial system of equations is transformed, as a result of which a second-order equation for effective pressure and the first-order equation for porosity arise. Paragraph 3 proposes an algorithm to solve the initial-boundary value problem numerically. A difference scheme for the heat equation with the righthand side and a Runge–Kutta second-order approximation scheme are used for numerical implementation.

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Author Biographies

R.A. Virts, Altai State University (Barnaul, Russia)

аспирант факультета математики и информационных технологий

A.A. Papin, Altai State University (Barnaul, Russia)

доктор физико-математических наук, заведующий кафедрой дифференциальных уравнений факультета математики и информационных технологий

W.A. Weigant, Bonn University (Bonn, Germany)

профессор

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Published
2020-03-06
How to Cite
Virts R., Papin A., Weigant W. Numerical Solotion of a Problem of Fluid Filtration in a Viscoelastic Porous Medium // Izvestiya of Altai State University, 2020, № 1(111). P. 72-76 DOI: 10.14258/izvasu(2020)1-11. URL: https://izvestiya.asu.ru/article/view/%282020%291-11.
Section
Математика и механика