Leibniz MMS Days 2024 - Abstract

Becker, Dominik

Simulation of Dynamic Two-Phase Flow in Porous Materials

Mathematically, two-phase flow in porous materials can be modeled by the two-phase Darcy equation. This system of equations applies within an effective porous material and when the flow velocities are small enough. An alternative is a Brinkmann-like two-phase model. This model accounts for viscous and inertia effects and can simulate geometries consisting of effective porous media and free-flow regions. In this talk a finite-volume implementation of the two-phase Darcy equation and the Brinkmann-like model is presented and compared on examples. So far, the Brinkmann-like model has only been implemented on effective porous materials. The work is embedded in the ML4Sim project, and the goal is to simulate a Liquid Composite Molding (LCM) process. In LCM, a textile stack initially filled with air is infiltrated with a thermoset polymer resin. One challenge of this process is the complex geometry. The rovings with very small pores lie next to relatively large pores between the rovings.