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Packing characteristics of sub-micron particles under van der Waals force and electrostatic force via discrete element method. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Li C, Gan J, Pinson D, Yu A, Zhou Z. Dynamic analysis of poured packing process of ellipsoidal particles. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Affiliation(s)
- Jennie Seckendorff
- Department of Chemistry Technical University of Munich Garching Germany
- Catalysis Research Center Technical University of Munich Garching Germany
- BU Catalysts Clariant Produkte (Deutschland) GmbH Bruckmühl Germany
| | - Olaf Hinrichsen
- Department of Chemistry Technical University of Munich Garching Germany
- Catalysis Research Center Technical University of Munich Garching Germany
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A combined physical and DEM modelling approach to investigate particle shape effects on load movement in tumbling mills. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.01.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Conzelmann NA, Penn A, Partl MN, Clemens FJ, Poulikakos LD, Müller CR. Link between packing morphology and the distribution of contact forces and stresses in packings of highly nonconvex particles. Phys Rev E 2021; 102:062902. [PMID: 33465969 DOI: 10.1103/physreve.102.062902] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 11/24/2020] [Indexed: 11/07/2022]
Abstract
An external load on a particle packing is distributed internally through a heterogeneous network of particle contacts. This contact force distribution determines the stability of the particle packing and the resulting structure. Here, we investigate the homogeneity of the contact force distribution in packings of highly nonconvex particles both in two-dimensional (2D) and three-dimensional (3D) packings. A recently developed discrete element method is used to model packings of nonconvex particles of varying sphericity. Our results establish that in 3D packings the distribution of the contact forces in the normal direction becomes increasingly heterogeneous with decreasing particle sphericity. However, in 2D packings the contact force distribution is independent of particle sphericity, indicating that results obtained in 2D packings cannot be extrapolated readily to 3D packings. Radial distribution functions show that the crystallinity in 3D packings decreases with decreasing particle sphericity. We link the decreasing homogeneity of the contact force distributions to the decreasing crystallinity of 3D packings. These findings are complementary to the previously observed link between the heterogeneity of the contact force distribution and a decreasing packing crystallinity due to an increasing polydispersity of spherical particles.
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Affiliation(s)
- N A Conzelmann
- ETH Zürich, Laboratory of Energy Science and Engineering, Department of Mechanical and Process Engineering, Institute of Energy and Process Engineering, Leonhardstrasse 21, 8092 Zürich, Switzerland.,Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| | - A Penn
- ETH Zürich, Laboratory of Energy Science and Engineering, Department of Mechanical and Process Engineering, Institute of Energy and Process Engineering, Leonhardstrasse 21, 8092 Zürich, Switzerland
| | - M N Partl
- Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| | - F J Clemens
- Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| | - L D Poulikakos
- Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| | - C R Müller
- ETH Zürich, Laboratory of Energy Science and Engineering, Department of Mechanical and Process Engineering, Institute of Energy and Process Engineering, Leonhardstrasse 21, 8092 Zürich, Switzerland
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Analysis of particle shape effect on the discharging of non-spherical particles in HTR-10 reactor core. NUCLEAR ENGINEERING AND DESIGN 2021. [DOI: 10.1016/j.nucengdes.2020.110934] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ji S, Wang S, Peng Z. Influence of external pressure on granular flow in a cylindrical silo based on discrete element method. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.08.083] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ge L, Gui N, Yang X, Tu J, Jiang S. Effects of aspect ratio and component ratio on binary-mixed discharging pebble flow in hoppers. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.07.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wang S, Fan Y, Ji S. Interaction between super-quadric particles and triangular elements andits application to hopper discharge. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.08.026] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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