Comparison between direct numerical simulations and effective models for fluid-porous flows using penalization
Language
en
Article de revue
This item was published in
Meccanica. 2020-05, vol. 55, n° 5, p. 1061-1077
Springer Verlag
English Abstract
This work is devoted to a numerical study of two-dimensional incompressible flows in afluid-porous medium system placed on an impermeable wall. Flow in the whole system is studiedeither at the pore scale or at the Darcy ...Read more >
This work is devoted to a numerical study of two-dimensional incompressible flows in afluid-porous medium system placed on an impermeable wall. Flow in the whole system is studiedeither at the pore scale or at the Darcy scale (using a one-domain approach) and the models atboth scales are solved with a penalization method using the same formal Navier-Stokes equationsmodified by a Darcy-like term. Several effective medium penalized models are considered for thesimulations. Various flow regimes are investigated ranging from laminar to turbulent. The velocityprofiles inside and outside the porous medium show significant discrepancies between the differentpenalization models compared to the direct numerical simulations. This work motivates furtherstudies about the spatial variations of the penalization coefficient to be introduced in the effectivemedium models in order to better reproduce the physics near the fluid-porous medium boundaries.Read less <
English Keywords
Fluid-porous media
Direct numerical simulation
Penalization method
Effective medium models.
Effective medium models
Origin
Hal imported