A Numerical Model for Flows in Porous and Open Domains Coupled at the Interface by Stress Jump

Details A Numerical Model for Flows in Porous and Open Domains Coupled at the Interface by Stress Jump A Numerical Model for Flows in Porous and Open Domains Coupled at the Interface by Stress Jump

2006-04-10

arxiv.org/abs/physics/0604078v1

Physics

Fluid Dynamics

31 pages, 9 figures

Scientific paper

10.1002/fld.1383

A numerical model was developed for flows involving an interface between a homogenous fluid and a porous medium. The numerical model is based on the finite volume method with body-fitted and multi-block grids. The Darcy-Forchheimer extended model is used to govern the flow in the porous medium region. At its interface, a shear stress jump was imposed, together with a continuity of normal stress. Furthermore, the effect of the jump condition on the diffusive flux is considered, additional to that on the convective part which has been usually considered. Numerical results of three flow configurations are presented. The modeling is suitable for problems which have complex interface boundary conditions coupling between two flow domains.

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