I would like to simulate groundwater level (GWL) fluctuation within granular soils using ABAQUS CAE.

I think that groundwater flow can be simulated simply using differential water head of boundary condition, but I have no ideas about the rise and fall of water level simulation.

I tried to simulate that using and controlling 'permeability', 'sorption' of Material property and 'pore pressure' of Boundary condition, But I failed.

Please, give me some clues or ideas.

Thank you!