Reducing segregation in vibrated binary-sized granular mixtures by excessive small particle introduction

Nakai, Fumiaki; Yoshii, Kiwamu

doi:https://doi.org/10.1007/s10035-024-01476-6

Reducing segregation in vibrated binary-sized granular mixtures by excessive small particle introduction

Nakai, Fumiaki; Yoshii, Kiwamu

Granular Matter, 2024, 27, 7

アクセス数:193件（2025-12-08 05:53 集計）

固定URL: https://hdl.handle.net/11094/98812

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タイトル	Reducing segregation in vibrated binary-sized granular mixtures by excessive small particle introduction
著者	ORCID 0000-0003-0629-7418 0000-0003-0629-7418 researchmap permalink fumiaki_nakai fumiaki_nakai NRID 1000080987206 1000080987206 著者名 Nakai, Fumiaki
著者	researchmap permalink 30985809 30985809 著者名 Yoshii, Kiwamu
キーワード等	Discrete element method
	Granular simulation
	Granular structure
	Hexagonal phase
	Segregation
内容	The version of record of this article, first published in Granular Matter, is available online at Publisher’s website: https://doi.org/10.1007/s10035-024-01476-6.
抄録	We numerically examine binary-sized granular mixtures confined between two parallel walls subjected to vertical vibration using the discrete element method. For a size ratio of 3 between large and small particles, we study the structure of large particles in moderately dense regimes where the combined two-dimensional packing fractions of both particle sizes exceed 1. When the fraction of small particles is small, segregation of the large particles occurs. In contrast, as the fraction of small particles increases, an effective repulsion between the large particles emerges over distances greater than the large particle diameter, suppressing their segregation. The emergence of reduction in segregation is confirmed for another size ratio, vibrational acceleration, system size, and for a case of bidisperse size distribution. Additionally, at the size ratio of 3, the effective repulsion induces a hexagonal phase of the large particles at packing fractions lower than in mono-component systems. This work will provide a fresh insight into granular physics, prompting further experimental and theoretical study.
出版者	Springer Science and Business Media Deutschland GmbH
収録物名	Granular Matter
巻(号)	27
ページ	7
刊行年月	2024-11-20
言語	英語
ハンドルURL	https://hdl.handle.net/11094/98812
PISSN	14345021
eISSN	14347636
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1007/s10035-024-01476-6
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCTERMS.bibliographicCitation	Granular Matter. 2024, 27, p. 7
DC.title	Reducing segregation in vibrated binary-sized granular mixtures by excessive small particle introduction
DC.creator	Nakai, Fumiaki
DC.creator	Yoshii, Kiwamu
DC.publisher	Springer Science and Business Media Deutschland GmbH
DC.language' scheme='DCTERMS.RFC1766	英語
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2024-11-20
DC.identifier	https://doi.org/10.1007/s10035-024-01476-6
DC.subject	Discrete element method
	Granular simulation
	Granular structure
	Hexagonal phase
	Segregation
DC.description	The version of record of this article, first published in Granular Matter, is available online at Publisher’s website: https://doi.org/10.1007/s10035-024-01476-6.
DCTERMS.abstract	We numerically examine binary-sized granular mixtures confined between two parallel walls subjected to vertical vibration using the discrete element method. For a size ratio of 3 between large and small particles, we study the structure of large particles in moderately dense regimes where the combined two-dimensional packing fractions of both particle sizes exceed 1. When the fraction of small particles is small, segregation of the large particles occurs. In contrast, as the fraction of small particles increases, an effective repulsion between the large particles emerges over distances greater than the large particle diameter, suppressing their segregation. The emergence of reduction in segregation is confirmed for another size ratio, vibrational acceleration, system size, and for a case of bidisperse size distribution. Additionally, at the size ratio of 3, the effective repulsion induces a hexagonal phase of the large particles at packing fractions lower than in mono-component systems. This work will provide a fresh insight into granular physics, prompting further experimental and theoretical study.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	98812
citation_title	Reducing segregation in vibrated binary-sized granular mixtures by excessive small particle introduction
citation_author	Nakai, Fumiaki
citation_author	Yoshii, Kiwamu
citation_publisher	Springer Science and Business Media Deutschland GmbH
citation_language	英語
citation_date	2024-11-20
citation_journal_title	Granular Matter
citation_volume	27
citation_firstpage	7
citation_doi	https://doi.org/10.1007/s10035-024-01476-6
citation_public_url	https://hdl.handle.net/11094/98812

Reducing segregation in vibrated binary-sized granular mixtures by excessive small particle introduction

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