Particle scale study on the crystallization of mono-sized cylindrical particles subject to vibration
Qian Q., An X., Zhao H., Dong K., Wu Y., Fu H., Zhang H., Yan S.
Powder Technology
Vol.352, P. 470-477
Опубликовано: 2019
Тип ресурса: Статья
DOI:10.1016/j.powtec.2019.05.002
Аннотация:
In this paper, the transition from random to ordered packings of mono-sized cylindrical particles under 3D mechanical vibration was simulated by discrete element method (DEM). The effects of particle aspect ratio, size of the particulate system and container wall on the granular crystallization were investigated. And the mechanisms were analyzed through the characterization of the order transition process in terms of packing density, coordination number (CN), orientational ordering parameter (O), nucleation and growth of cluster and granular temperature (θ). The results show that nearly perfect crystallization of mono-sized cylindrical particles can be achieved with specific aspect ratio and proper vibration conditions in a cylindrical container. The orientational ordering parameter demonstrates that the crystallization firstly starts from the container wall and then propagates inward gradually. The lower granular temperature in a cuboid container indicates less vibration energy transf
Ключевые слова:
Cylindrical particle packing; Discrete element method; Mechanical vibration; Mechanism; Ordering or crystallization
Aspect ratio; Containers; Finite difference method; Mechanisms; Cylindrical containers; Cylindrical particles; Granular crystallization; Nucleation and growth; Ordering transitions; Orientational order parameters; Particle aspect ratios; Self-assembly of particles; Vibrations (mechanical); Article; chemical structure; container size; container wall; controlled study; coordination number; crystallization; entropy; granular temperature; material state; mathematical model; molecular mechanics; mono sized cylindrical particle; orientational order; packing density; particle size; phase transition; physical parameters; simulation; temperature; temperature dependence; velocity; vibration
Язык текста: Английский
ISSN: 1873-328X
Qian Q.
An X.
Zhao H.
Dong K.
Wu Y.
Fu H.
Zhang H.
Yan S. Syaokhun 1984-
Qиан Q.
Ан Х.
Жао Х.
Донг К.
Wу Y.
Фу Х.
Жанг Х.
Ян С. Сяохун 1984-
Particle scale study on the crystallization of mono-sized cylindrical particles subject to vibration
Текст визуальный непосредственный
Powder Technology
Elsevier Science Publisher B.V.
Vol.352 P. 470-477
2019
Статья
Cylindrical particle packing Discrete element method Mechanical vibration Mechanism Ordering or crystallization
Aspect ratio Containers Finite difference method Mechanisms Cylindrical containers Cylindrical particles Granular crystallization Nucleation and growth Ordering transitions Orientational order parameters Particle aspect ratios Self-assembly of particles Vibrations (mechanical) Article chemical structure container size container wall controlled study coordination number crystallization entropy granular temperature material state mathematical model molecular mechanics mono sized cylindrical particle orientational order packing density particle size phase transition physical parameters simulation temperature temperature dependence velocity vibration
In this paper, the transition from random to ordered packings of mono-sized cylindrical particles under 3D mechanical vibration was simulated by discrete element method (DEM). The effects of particle aspect ratio, size of the particulate system and container wall on the granular crystallization were investigated. And the mechanisms were analyzed through the characterization of the order transition process in terms of packing density, coordination number (CN), orientational ordering parameter (O), nucleation and growth of cluster and granular temperature (θ). The results show that nearly perfect crystallization of mono-sized cylindrical particles can be achieved with specific aspect ratio and proper vibration conditions in a cylindrical container. The orientational ordering parameter demonstrates that the crystallization firstly starts from the container wall and then propagates inward gradually. The lower granular temperature in a cuboid container indicates less vibration energy transf