Soil arching due to leaking of tunnel buried in water-rich sand

YY Long, Y Tan - Tunnelling and Underground Space Technology, 2020 - Elsevier
For tunnel buried in water-rich sand stratum, water intrusion into tunnel lining would bring
sand particles into the tunnel and then caused ground subsidence or even cave-in of …

Disentangling the free-fall arch paradox in silo discharge

SM Rubio-Largo, A Janda, D Maza, I Zuriguel… - Physical review …, 2015 - APS
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 …

Outflow and clogging of shape-anisotropic grains in hoppers with small apertures

A Ashour, S Wegner, T Trittel, T Börzsönyi… - Soft matter, 2017 - pubs.rsc.org
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 …

Packing, alignment and flow of shape-anisotropic grains in a 3D silo experiment

T Börzsönyi, E Somfai, B Szabó, S Wegner… - New Journal of …, 2016 - iopscience.iop.org
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 …

Clogging of soft particles in two-dimensional hoppers

X Hong, M Kohne, M Morrell, H Wang, ER Weeks - Physical Review E, 2017 - APS
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 …

Intermittent flow and transient congestions of soft spheres passing narrow orifices

K Harth, J Wang, T Börzsönyi, R Stannarius - Soft Matter, 2020 - pubs.rsc.org
Soft, low-friction particles in silos show peculiar features during their discharge. The outflow
velocity and the clogging probability both depend upon the momentary silo fill height, in …

Orientation, flow, and clogging in a two-dimensional hopper: Ellipses vs. disks

J Tang, RP Behringer - Europhysics Letters, 2016 - iopscience.iop.org
Abstract Two-dimensional (2D) hopper flow of disks has been extensively studied. Here, we
investigate hopper flow of ellipses with aspect ratio $\alpha= 2$, and we contrast that …

Prediction of mass discharge rate in conical hoppers using elastoplastic model

QJ Zheng, BS Xia, RH Pan, AB Yu - Powder technology, 2017 - Elsevier
Precise evaluation of mass discharge rate (MDR) in hoppers is an important topic in many
industries. Facilitated by an Eulerian-formulation finite element method (FEM), this paper …

How does internal angle of hoppers affect granular flow? Experimental studies using digital particle image velocimetry

S Albaraki, SJ Antony - Powder Technology, 2014 - Elsevier
Mechanical behaviour of powders and grains often displays features of solid-like and liquid-
like characteristics of matter. In spite of processing granular materials quite extensively in the …

Silo outflow of soft frictionless spheres

A Ashour, T Trittel, T Börzsönyi, R Stannarius - Physical Review Fluids, 2017 - APS
Outflow of granular materials from silos is a remarkably complex physical phenomenon that
has been extensively studied with simple objects like monodisperse hard disks in two …