Influence of model particle size and spatial resolution in coarse-graining DEM-CFD simulation.
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| Title: | Influence of model particle size and spatial resolution in coarse-graining DEM-CFD simulation. |
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| Authors: | Jiang, Zhaohua1 (AUTHOR), Tsuji, Takuya1 (AUTHOR) tak@mech.eng.osaka-u.ac.jp, Washino, Kimiaki1 (AUTHOR), Tanaka, Toshitsugu1 (AUTHOR) |
| Source: | Advanced Powder Technology. Oct2021, Vol. 32 Issue 10, p3525-3539. 15p. |
| Subjects: | Spatial resolution, Discrete element method, Computational fluid dynamics, Finite size scaling (Statistical physics), Fluid dynamics, Models & modelmaking |
| Abstract: | [Display omitted] • Effect of particle size and spatial resolution in coarse-graining DEM-CFD are studied. • Bubble detection is employed to quantify the bubble size and number. • Bubble size is scaled by the model particle size. • Usage of coarse spatial resolution increases bubble size and decreases bubble number. • Model particle size and spatial resolution countervail in coarse-graining model. The discrete element method (DEM) coupled with computational fluid dynamics (CFD) is a powerful tool for exploring the detailed behaviors of dense particle–fluid interaction problems such as fluidized beds. Coarse-graining models have been proposed to decrease the computational cost by increasing the model particle size. In this study, we examine the influence of the model particle size and the spatial resolution on the average size and number of bubbles in coarse-graining DEM-CFD calculations of bubbling fluidized beds. Calculation results indicate that the bubble size is scaled by the model particle size if parameters are following similarity laws defined in a particle scale, as well as the geometric similarity of the whole system is maintained. The usage of coarse spatial resolution increases the bubble size and decreases the number of bubbles. The countervailing influence of the model particle size and the spatial resolution in a practical coarse-graining scenario results in nearly the same bubble size. [ABSTRACT FROM AUTHOR] |
| Copyright of Advanced Powder Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 152794116 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Influence of model particle size and spatial resolution in coarse-graining DEM-CFD simulation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Jiang%2C+Zhaohua%22">Jiang, Zhaohua</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tsuji%2C+Takuya%22">Tsuji, Takuya</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tak@mech.eng.osaka-u.ac.jp</i><br /><searchLink fieldCode="AR" term="%22Washino%2C+Kimiaki%22">Washino, Kimiaki</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tanaka%2C+Toshitsugu%22">Tanaka, Toshitsugu</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Advanced+Powder+Technology%22">Advanced Powder Technology</searchLink>. Oct2021, Vol. 32 Issue 10, p3525-3539. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Spatial+resolution%22">Spatial resolution</searchLink><br /><searchLink fieldCode="DE" term="%22Discrete+element+method%22">Discrete element method</searchLink><br /><searchLink fieldCode="DE" term="%22Computational+fluid+dynamics%22">Computational fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+size+scaling+%28Statistical+physics%29%22">Finite size scaling (Statistical physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Models+%26+modelmaking%22">Models & modelmaking</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: [Display omitted] • Effect of particle size and spatial resolution in coarse-graining DEM-CFD are studied. • Bubble detection is employed to quantify the bubble size and number. • Bubble size is scaled by the model particle size. • Usage of coarse spatial resolution increases bubble size and decreases bubble number. • Model particle size and spatial resolution countervail in coarse-graining model. The discrete element method (DEM) coupled with computational fluid dynamics (CFD) is a powerful tool for exploring the detailed behaviors of dense particle–fluid interaction problems such as fluidized beds. Coarse-graining models have been proposed to decrease the computational cost by increasing the model particle size. In this study, we examine the influence of the model particle size and the spatial resolution on the average size and number of bubbles in coarse-graining DEM-CFD calculations of bubbling fluidized beds. Calculation results indicate that the bubble size is scaled by the model particle size if parameters are following similarity laws defined in a particle scale, as well as the geometric similarity of the whole system is maintained. The usage of coarse spatial resolution increases the bubble size and decreases the number of bubbles. The countervailing influence of the model particle size and the spatial resolution in a practical coarse-graining scenario results in nearly the same bubble size. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Advanced Powder Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.apt.2021.08.012 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 3525 Subjects: – SubjectFull: Spatial resolution Type: general – SubjectFull: Discrete element method Type: general – SubjectFull: Computational fluid dynamics Type: general – SubjectFull: Finite size scaling (Statistical physics) Type: general – SubjectFull: Fluid dynamics Type: general – SubjectFull: Models & modelmaking Type: general Titles: – TitleFull: Influence of model particle size and spatial resolution in coarse-graining DEM-CFD simulation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Jiang, Zhaohua – PersonEntity: Name: NameFull: Tsuji, Takuya – PersonEntity: Name: NameFull: Washino, Kimiaki – PersonEntity: Name: NameFull: Tanaka, Toshitsugu IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 09218831 Numbering: – Type: volume Value: 32 – Type: issue Value: 10 Titles: – TitleFull: Advanced Powder Technology Type: main |
| ResultId | 1 |
