May 11, 2020 /

Milestone Presentation by Elissa Eggenweiler

Doctoral Researcher at the Institute of Applied Analysis and Numerical Simulation

The next public SFB 1313 milestone presentation will be held by Elissa Eggenweiler (Research Project A03) on "Development of interface concepts using averaging techniques".

Date: Monday, May 11, 2020
Time: 11:00 am
Title: "Development of interface concepts using averaging techniques"
Place: online presentation >>> If you are interested in the lecture, please contact sina.ackermann@iws.uni-stuttgart.de

Abstract

Physically consistent interface conditions are important for accurate mathematical modeling 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 modeled. Evidently, there is a need for new, more general interface conditions to couple free flow to porous-medium flow.
In this talk, new interface conditions valid for arbitrary flow directions will be presented. Homogenization and boundary layer theory is applied to derive these conditions rigorously. The proposed conditions are validated numerically by comparison of pore-scale and macroscale simulation results for different geometrical configurations and different flow problems. The comparison of the developed interface conditions against the classical ones demonstrate the advantage of the proposed coupling concept.

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