Revista Integración, temas de matemáticas.
Vol. 37 No. 2 (2019): Revista Integración, temas de matemáticas
Research and Innovation Articles

The asymptotic analysis of a Darcy-Stokes system coupled through a curved

Fernando A. Morales
Universidad Nacional de Colombia, Escuela de Matemáticas, Medellín, Colombia.

Published 2019-07-29

Keywords

  • porous media,
  • curved interfaces,
  • Darcy-Stokes system,
  • Darcy- Brinkman system

How to Cite

Morales, F. A. (2019). The asymptotic analysis of a Darcy-Stokes system coupled through a curved. Revista Integración, Temas De matemáticas, 37(2), 261–297. https://doi.org/10.18273/revint.v37n2-2019004

Abstract

We present the asymptotic analysis of a Darcy-Stokes coupled
system, modeling the fluid exchange between a narrow channel (Stokes flow) and a porous medium (Darcy flow), coupled through a C2 curved interface. The channel is a cylindrical domain between the interface (Τ) and a parallel translation of itself (Τ + ε  eN, ε> 0). The introduction of a change variable (to fix the domain geometry) and the introduction of two systems of coordinates: the Cartesian and a local one (consistent with the geometry of the surface), permit to find the limiting form of the system when the width of the channel tends to zero (ε → 0). The limit problem is a coupled system with Darcy flow in the porous medium and Brinkman flow on the curved interface (Τ).

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