Abstract
Granular flow in a shear cell under conditions relevant to those in an annular cell is investigated based on the results obtained by using the Discrete Element Method. The distributions of porosity and coordination number are studied, and the relationship of these variables is established. The so-called I-rheology proposed by Jop et al. [Nature (London) 441, 727 (2006)] is tested. The results display that the I-rheology can effectively describe the intermediate flow regime, whereas significant deviations take place when it is applied to the quasi-static regime. The correlations between stresses and packing fraction are examined and the packing fraction values for the quasi-static/intermediate and intermediate/inertial regime transitions are identified. The force networks/structures for different scaled stiffness are analyzed to further understand the regime-transitions for the granular flow.
| Original language | English |
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| Title of host publication | Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media |
| Editors | Aibing Yu, Kejun Dong, Runyu Yang, Stefan Luding |
| Place of Publication | Melville NY USA |
| Publisher | American Institute of Physics |
| Pages | 531 - 534 |
| Number of pages | 4 |
| Volume | 1542 |
| ISBN (Print) | 9780735411661 |
| DOIs | |
| Publication status | Published - 2013 |
| Externally published | Yes |
| Event | Powders and Grains 2013 - Sydney, Australia Duration: 8 Jul 2013 → 12 Jul 2013 Conference number: 7th http://www.pg2013.unsw.edu.au/ http://www.proceedings.com/21017.html |
Conference
| Conference | Powders and Grains 2013 |
|---|---|
| Country | Australia |
| City | Sydney |
| Period | 8/07/13 → 12/07/13 |
| Internet address |