Small Funnel Flow - The same experiments were set up in, both, simulation and reality to see if the virtual regolith behaved realistically. This test looked at how small (16 g) samples of material flowed through narrow funnels.
Large Funnel Setup - The simulation was scaled up to test larger quantities of regolith. This example poured 0.5 kg of regolith through wider funnels, to compare against physical equivalents.