Geometric similarity on interparticle force evaluation for scaled-up DEM particles

Hu, Yuze; Chan, Ei L.; Tsuji, Takuya; Tanaka, Toshitsugu; Washino, Kimiaki

doi:https://doi.org/10.1016/j.powtec.2022.117483

Geometric similarity on interparticle force evaluation for scaled-up DEM particles

Hu, Yuze; Chan, Ei L.; Tsuji, Takuya et al.

Powder Technology, 2022, 404, 117483

アクセス数:565件（2025-08-16 18:49 集計）

固定URL: https://hdl.handle.net/11094/88354

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タイトル	Geometric similarity on interparticle force evaluation for scaled-up DEM particles
著者	著者名 Hu, Yuze
	著者名 Chan, Ei L.
	NRID 1000090379123 1000090379123 ORCID 0000-0001-6366-2923 0000-0001-6366-2923 researchmap permalink tsuji.takuya tsuji.takuya Scopus Author ID 37019391700 37019391700 著者名 Tsuji, Takuya
	NRID 1000090171777 1000090171777 researchmap permalink toshitsugu.tanaka toshitsugu.tanaka Scopus Author ID 7406728499 7406728499 著者名 Tanaka, Toshitsugu
	NRID 1000010726384 1000010726384 ORCID 0000-0003-1119-1909 0000-0003-1119-1909 researchmap permalink washino washino Scopus Author ID 25655605900 25655605900 著者名 Washino, Kimiaki
キーワード等	Calculation speed-up
	DEM
	Geometric similarity
	Interparticle force
	Scaled-up particle model
内容	Hu Y., Chan E.L., Tsuji T., et al. Geometric similarity on interparticle force evaluation for scaled-up DEM particles. Powder Technology, 404, 117483. https://doi.org/10.1016/j.powtec.2022.117483.
抄録	The scaled-up particle model, which is also commonly known as the coarse grain model or discrete parcel model, is frequently used to reduce the computational cost in Discrete Element Method (DEM). In the direct force scaling approach, the forces acting on original particles are first estimated and then directly scaled to apply to scaled-up particles. It is therefore crucial to appropriately evaluate the variables of the original particles, e.g. overlap and separation distance, from the scaled-up particles particularly when estimating complex interparticle forces. The present work proposes the use of geometric similarity for the evaluation of the original particle overlap and separation distance. It is demonstrated that the proposed method can provide an almost identical stress-strain curve between the original and scaled-up particles during uniaxial compression of a packed particle bed, whilst the conventional method in the literature gives significant overestimation of the stress. In addition, the scaled-up particles can reasonably replicate the original velocity distributions of cohesive particles with both liquid bridge and JKR surface adhesion forces in a dynamic flow system (vertical mixer). The simulation results suggest that the method proposed can be applied to any type of interparticle forces. A scaling of time step limit is also derived theoretically and discussed.
出版者	Elsevier B.V.
収録物名	Powder Technology
巻(号)	404
ページ	117483
刊行年月	2022-05-16
言語	英語
ハンドルURL	https://hdl.handle.net/11094/88354
PISSN	00325910
eISSN	1873328X
NCID	AA00778424
NCID	AA11537496
関連情報 (isVersionOf)	DOI (出版社版) https://doi.org/10.1016/j.powtec.2022.117483
アクセス権	open access
権利情報	© 2022. This manuscript version is made available under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
出版タイプ	Accepted Manuscript
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
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Powder Technology. 2022, 404, p. 117483
DC.title	Geometric similarity on interparticle force evaluation for scaled-up DEM particles
DC.creator	Hu, Yuze
	Chan, Ei L.
	Tsuji, Takuya
	Tanaka, Toshitsugu
	Washino, Kimiaki
DC.publisher	Elsevier B.V.
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2022-05-16
DC.identifier	https://doi.org/10.1016/j.powtec.2022.117483
DC.subject	Calculation speed-up
	DEM
	Geometric similarity
	Interparticle force
	Scaled-up particle model
DC.description	Hu Y., Chan E.L., Tsuji T., et al. Geometric similarity on interparticle force evaluation for scaled-up DEM particles. Powder Technology, 404, 117483. https://doi.org/10.1016/j.powtec.2022.117483.
DCTERMS.abstract	The scaled-up particle model, which is also commonly known as the coarse grain model or discrete parcel model, is frequently used to reduce the computational cost in Discrete Element Method (DEM). In the direct force scaling approach, the forces acting on original particles are first estimated and then directly scaled to apply to scaled-up particles. It is therefore crucial to appropriately evaluate the variables of the original particles, e.g. overlap and separation distance, from the scaled-up particles particularly when estimating complex interparticle forces. The present work proposes the use of geometric similarity for the evaluation of the original particle overlap and separation distance. It is demonstrated that the proposed method can provide an almost identical stress-strain curve between the original and scaled-up particles during uniaxial compression of a packed particle bed, whilst the conventional method in the literature gives significant overestimation of the stress. In addition, the scaled-up particles can reasonably replicate the original velocity distributions of cohesive particles with both liquid bridge and JKR surface adhesion forces in a dynamic flow system (vertical mixer). The simulation results suggest that the method proposed can be applied to any type of interparticle forces. A scaling of time step limit is also derived theoretically and discussed.
DC.rights	© 2022. This manuscript version is made available under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
DC.format	88354
citation_title	Geometric similarity on interparticle force evaluation for scaled-up DEM particles
citation_author	Hu, Yuze
	Chan, Ei L.
	Tsuji, Takuya
	Tanaka, Toshitsugu
	Washino, Kimiaki
citation_publisher	Elsevier B.V.
citation_language	英語
citation_date	2022-05-16
citation_journal_title	Powder Technology
citation_volume	404
citation_firstpage	117483
citation_doi	https://doi.org/10.1016/j.powtec.2022.117483
citation_public_url	https://hdl.handle.net/11094/88354

Geometric similarity on interparticle force evaluation for scaled-up DEM particles

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