Numerical investigation of granular flow in a shear cell

X. Wang; H.P. Zhu; A.B. Yu; Stefan Luding

doi:10.1063/1.4811985

Numerical investigation of granular flow in a shear cell

X. Wang, H.P. Zhu, A.B. Yu, Stefan Luding

Faculty of Engineering Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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
Title of host publication	Powders and Grains 2013
Subtitle of host publication	Proceedings of the 7th International Conference on Micromechanics of Granular Media
Editors	Aibing Yu, Kejun Dong, Runyu Yang, Stefan Luding
Publisher	AIP Publishing LLC
Pages	531-534
ISBN (Print)	978-0-7354-1166-1
DOIs	https://doi.org/10.1063/1.4811985
Publication status	Published - 8 Jul 2013
Event	7th International Conference on Micromechanics of Granular Media, Powders and Grains 2013 - Sydney, Australia Duration: 8 Jul 2013 → 12 Jul 2013 Conference number: 7 http://www.pg2013.unsw.edu.au/

Publication series

Name	AIP Conference Proceedings
Publisher	AIP Publishing LLC
Volume	1542
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	7th International Conference on Micromechanics of Granular Media, Powders and Grains 2013
Abbreviated title	Powders & Grains
Country	Australia
City	Sydney
Period	8/07/13 → 12/07/13
Internet address	http://www.pg2013.unsw.edu.au/

Keywords

Discrete element method
Shear cell
Granular dynamics
Flow regimes
Structural analysis

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Wang, X., Zhu, H. P., Yu, A. B., & Luding, S. (2013). Numerical investigation of granular flow in a shear cell. In A. Yu, K. Dong, R. Yang, & S. Luding (Eds.), Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media (pp. 531-534). (AIP Conference Proceedings; Vol. 1542). AIP Publishing LLC. https://doi.org/10.1063/1.4811985

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title = "Numerical investigation of granular flow in a shear cell",

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.",

keywords = "Discrete element method, Shear cell, Granular dynamics, Flow regimes, Structural analysis",

author = "X. Wang and H.P. Zhu and A.B. Yu and Stefan Luding",

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Wang, X, Zhu, HP, Yu, AB & Luding, S 2013, Numerical investigation of granular flow in a shear cell. in A Yu, K Dong, R Yang & S Luding (eds), Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media. AIP Conference Proceedings, vol. 1542, AIP Publishing LLC, pp. 531-534, 7th International Conference on Micromechanics of Granular Media, Powders and Grains 2013, Sydney, Australia, 8/07/13. https://doi.org/10.1063/1.4811985

Numerical investigation of granular flow in a shear cell. / Wang, X.; Zhu, H.P.; Yu, A.B.; Luding, Stefan.

Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media. ed. / Aibing Yu; Kejun Dong; Runyu Yang; Stefan Luding. AIP Publishing LLC, 2013. p. 531-534 (AIP Conference Proceedings; Vol. 1542).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Numerical investigation of granular flow in a shear cell

AU - Wang, X.

AU - Zhu, H.P.

AU - Yu, A.B.

AU - Luding, Stefan

N1 - Conference code: 7

PY - 2013/7/8

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N2 - 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.

AB - 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.

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KW - Shear cell

KW - Granular dynamics

KW - Flow regimes

KW - Structural analysis

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