Hello everyone,
I’m currently working on a simulation using the multiphaseInterFoam solver (specifically, the PFM version cfdemSolvermultiphase from the tutorials). My goal is to model fluid injection into a porous medium with particles, but I’m encountering some issues with pressure stability. The simulation often shows negative pressures and other unstable pressure fluctuations.
I’d appreciate any suggestions or troubleshooting tips on resolving these pressure issues.
Also, since this is an unresolved method, my understanding is that the particle size should ideally be smaller than the grid cells. However, I noticed that the simulation can still run even when the particles are larger than the grid cells, which is a bit confusing to me. Could anyone clarify if this setup could be affecting my results, or if it’s normal for the solver to handle larger particles?
Thanks in advance for any insights or advice!