Abstract
The effect of particle size distribution on dry granular flows of spherical
particles has been numerically investigated. A quasi-two-dimensional granular column collapse set-up has been modelled using the Discrete Element Method (DEM). Systems formed by monodisperse particles of radius R = 0.01 m and polydisperse particles of the same average radius and coefficient of uniformity Cu = 1.9 have been studied for initial granular columns aspect ratios of 1.1 and 2.2. The results using monodisperse and narrow particle size distributions show similar evolution of the run-out profiles, the final run-out distance being reached in less than one second in every configuration. Averaged velocity fields have been obtained, from which peak values of longitudinal and vertical components
of velocity have been found.
particles has been numerically investigated. A quasi-two-dimensional granular column collapse set-up has been modelled using the Discrete Element Method (DEM). Systems formed by monodisperse particles of radius R = 0.01 m and polydisperse particles of the same average radius and coefficient of uniformity Cu = 1.9 have been studied for initial granular columns aspect ratios of 1.1 and 2.2. The results using monodisperse and narrow particle size distributions show similar evolution of the run-out profiles, the final run-out distance being reached in less than one second in every configuration. Averaged velocity fields have been obtained, from which peak values of longitudinal and vertical components
of velocity have been found.
| Original language | English |
|---|---|
| Title of host publication | PARTICLES 2017 |
| Subtitle of host publication | V International Conference on Particle-Based Methods - Fundamentals and Applications |
| Editors | P. Wriggers, M. Bischoff, E. Oñate, D.R.J. Owen, T. Zohdi |
| Place of Publication | Barcelona, Spain |
| Publisher | International Center for Numerical Methods in Engineering |
| Number of pages | 10 |
| ISBN (Print) | 978-84-946909-7-6 |
| Publication status | Published - Sept 2017 |
| Event | 5th International Conference on Particle-Based Methods, PARTICLES 2017 - Hannover, Germany Duration: 26 Sept 2017 → 28 Sept 2017 Conference number: 5 http://congress.cimne.com/particles2017/frontal/default.asp |
Conference
| Conference | 5th International Conference on Particle-Based Methods, PARTICLES 2017 |
|---|---|
| Abbreviated title | PARTICLES |
| Country/Territory | Germany |
| City | Hannover |
| Period | 26/09/17 → 28/09/17 |
| Internet address |