Outflow of granular material through a small orifice is a fundamental process in many
industrial fields, for example in silo discharge, and in everyday's life. Most experimental …

Granular material flowing through bottlenecks, like the openings of silos, tend to clog and
thus inhibit further flow. We study this phenomenon in a three-dimensional hopper for …

Using experiments and simulations, we study the flow of soft particles through quasi-two-
dimensional hoppers. The first experiment uses oil-in-water emulsion droplets in a thin …

Damage or deterioration of water distribution or storm water drain pipeline systems create a
problem of leakage, which has the potential to erode its surrounding soil. This erosion, if not …

Granular flow out of a silo is studied experimentally and numerically. The time evolution of
the discharge rate as well as the normal force (apparent weight) at the bottom of the …

We study the outflow of soft particles through quasi-two-dimensional hoppers with both
experiments and simulations. The experiments utilize spheres made with hydrogel, silicone …

Numerous experimental and computational studies show that continuous hopper flows of
granular materials obey the Beverloo equation that relates the volume flow rate Q and the …

We report on the nature of flow events for the gravity-driven discharge of glass beads
through a hole that is small enough that the hopper is susceptible to clogging. In particular …

The outflow of granular materials from storage containers with narrow outlets is studied by
means of ultrafast x-ray computed tomography (UFXCT). The used acquisition speed of this …

We investigate the coupling between the interstitial medium and granular particles by
studying the hopper flow of dry and submerged systems experimentally and numerically. In …