Interface Conditions for Arbitrary Flows in Coupled Porous-Medium and Free-Flow Systems

被引：0

作者：

Eggenweiler, Elissa ^{[1
]}

Rybak, Iryna ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Appl Anal & Numer Simulat, Pfaffenwaldring 57, D-70569 Stuttgart, Germany

来源：

FINITE VOLUMES FOR COMPLEX APPLICATIONS IX-METHODS, THEORETICAL ASPECTS, EXAMPLES, FVCA 9 | 2020年 / 323卷

关键词：

Porous media; Free flow; Interface conditions; Finite volumes; BOUNDARY-CONDITIONS; FLUID;

D O I：

10.1007/978-3-030-43651-3_31

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

Physically consistent interface conditions are important for accurate mathematical modelling and numerical simulation of flow and transport processes in coupled free-flow and porous-medium systems. Traditional coupling concepts are valid for simplified cases only, such as flows parallel to the fluid-porous interface or very specific boundary value problems. This severely limits the range of applications that can be accurately modelled. Evidently, there is a need for more general interface conditions to couple free flow to porous-medium flow. In this paper, we propose new coupling conditions for arbitrary flow directions and periodic porous media. These conditions are derived by the theory of homogenisation and boundary layers and are applicable to general filtration problems. The derived set of coupling conditions are validated by comparison of pore-scale to macroscale numerical simulations.

引用

页码：345 / 353

页数：9

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