A Frictionless Janssen Effect in a 2D Silo of Cohesive Droplets

When a silo is filled with frictional grains, the pressure at its base increases non-linearly with the column height, reaching a plateau once the pile exceeds a critical height. This phenomenon is known as the Janssen effect, where friction between grains and the silo walls supports any additional weight. We investigate an analogue of this effect in a two-dimensional bi-disperse system of frictionless oil droplets with a tunable cohesive force.