In many fields of industrial application coupled systems of a porous medium and an adjacent free-flow region are modelled. In some of these appliations, the development of droplets at the interface between the two different flow compartments plays a crucial role and should be taken into account in the model.
Different approaches to model the processes at the interface are examined within this project.The aim is to develop a detailed description of droplet formation and movement. First, the transition zone between free flow and porous medium is examined in detail using a coupled model that accounts for in-depth micro-scale processes on the interface between the two flow regimes. In a second step, an upscaling process is determined to transfer the governing pore-scale effects to an averaged macro-scale flow model in order to make real world applications on large scales technically feasible.
The project is part of the international research training group "Droplet Interaction Technologies" (DropIT). Research is done in cooperation with scientists at the University of Bergamo (Italy). The IRTG DropIT conducts research in the areas of drop-gas-interaction, drop-wall-interaction and drop-liquid-interaction, aiming at improving e.g. industrial processes with the gained knowledge.
- Project leader
- Research assistants
- Cooperation partners
University of Bergamo
01/2016 - 09/2025
- Further information
Deutsche Forschungsgemeinschaft (DFG)
- Ackermann, S., Fest-Santini, S., Veyskarami, M., Helmig, R., & Santini, M. (2023). Experimental validation of a coupling concept for drop formation and growth onto porous materials by high-resolution X-ray imaging technique. International Journal of Multiphase Flow, 160. https://doi.org/10.1016/j.ijmultiphaseflow.2022.104371
- Michalkowski, C., Veyskarami, M., Bringedal, C., Helmig, R., & Schleper, V. (2022). Two-phase Flow Dynamics at the Interface Between GDL and Gas Distributor Channel Using a Pore-Network Model. Transport in Porous Media, 144(2), 429--458. https://doi.org/10.1007/s11242-022-01813-4
- Ackermann, S., Bringedal, C., & Helmig, R. (2021). Multi-scale three-domain approach for coupling free flow and flow in porous media including droplet-related interface processes. Journal of Computational Physics, 429, 109993. https://doi.org/10.1016/j.jcp.2020.109993