Fig. 10: Clogging phase diagram.
From: Behaviors of lunar regolith simulants under varying gravitational conditions

Particle velocities throughout funnel as a function of ϕ ∈ [0.01, 0.05, 0.1, 0.5] and g ∈ [0.16, 0.38, 1.0] G. As ϕ increases (left to right) and as g increases (bottom to top), the particles jam and arrest the flow, such that a clear clogging transition occurs as a diagonal line cutting across the (ϕ,g)-space.