Water level doesn't rise in CFD-DEM simulation of air-water-solid. What should I chec
 

Hello,
I am coupling DEM with VOF and validating the model with settling particle and rising water level cases. Settling particle case works fine but rising water level does not perform. As water level should rise upon insertion of particles. I am inserting 500 particles, mesh size is larger than particle size (unresolved CFD-DEM) coupling.
Can anyone help me to understand this?