The abundance of granular materials and powders that are being used in several fields,
along with their broad applications, requires a comprehensive understanding of both their …

When flowing through narrow channels or constrictions, many-body systems exhibit various
flowing patterns, yet they can also get stuck. In many of these systems, the flowing elements …

“Beverloo's law” is considered as the standard expression to estimate the flow rate of
particles through apertures. This relation was obtained by simple dimensional analysis and …

We present experimental results on the effect that inserting an obstacle just above the outlet
of a silo has on the clogging process. We find that, if the obstacle position is properly …

Run-up of granular debris flows against slit dams on slopes is a complex process that
involves deceleration, deposition, and discharge. It is imperative to understand the run-up …

Several theoretical predictions of the mass flow rate of granular media discharged from a
silo are based on the spontaneous development of a free-fall arch region, the existence of …

Evaluating unconsolidated reservoirs' internal stability concerning fine migration is essential
for the commercial development of natural gas hydrate resources. In this pursuit, we use our …

We measure the fraction F of flowing grain configurations that precede a clog, based on the
average mass discharged between clogging events for various aperture geometries. By …

The flow behaviour of a powder is critical to its performance in many industrial applications
and manufacturing processes. Operations such as powder transfer, die filling and powder …

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 …