DEM calibration insights on the role of particle shape for sub 2 mm particles
Abstract This study introduces a comprehensive calibration technique for discrete element method (DEM) simulations. Its focus is on particles smaller than 2 mm and this showcase shows comparison between spherical and polyhedral particle shape calibration. Very fine powders or particulate materials w...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-07-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-04592-2 |
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| author | Jan Diviš David Žurovec Álvaro Ramírez-Gómez Jakub Hlosta Jiří Rozbroj Kamila Pokorná Jan Nečas Jiří Zegzulka |
| author_facet | Jan Diviš David Žurovec Álvaro Ramírez-Gómez Jakub Hlosta Jiří Rozbroj Kamila Pokorná Jan Nečas Jiří Zegzulka |
| author_sort | Jan Diviš |
| collection | DOAJ |
| description | Abstract This study introduces a comprehensive calibration technique for discrete element method (DEM) simulations. Its focus is on particles smaller than 2 mm and this showcase shows comparison between spherical and polyhedral particle shape calibration. Very fine powders or particulate materials with small particles are usually calibrated with upscaling. Unfortunately, some applications are dependent heavily on a quite precise particle size range, such as abrasion, crushing, pneumatic conveying, feeding, and dosing. Traditional DEM simulations often rely on spherical or multi-spherical particle models, which lack the precision needed, particularly due to the surface waviness introduced in the latter case. This limitation impacts dynamic industrial applications like mixing, hopper discharge, and abrasion. To address this gap, we present a comparative calibration approach for spherical and polyhedral particles, using silica sand as the test material. The calibration combines static and dynamic parameters such as rolling resistance, particle-to-particle restitution, and wall friction, validated through experiments on a powder flow calibration stand. Results revealed significant differences in flow dynamics, highlighting the enhanced realism of polyhedral models despite increased computational demands. This work provides a comprehensive framework for DEM calibration of fine particulate materials, specifically validated for particle sizes between 400 and 1500 µm, improving simulation accuracy and extending applicability across various industrial processes. |
| format | Article |
| id | doaj-art-7fe305c8d2824afc8e307b5b7105fb6c |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-7fe305c8d2824afc8e307b5b7105fb6c2025-08-20T03:45:30ZengNature PortfolioScientific Reports2045-23222025-07-0115111610.1038/s41598-025-04592-2DEM calibration insights on the role of particle shape for sub 2 mm particlesJan Diviš0David Žurovec1Álvaro Ramírez-Gómez2Jakub Hlosta3Jiří Rozbroj4Kamila Pokorná5Jan Nečas6Jiří Zegzulka7Department of Mining Engineering and Safety, Faculty of Mining and Geology, VSB-TU OstravaDepartment of Mining Engineering and Safety, Faculty of Mining and Geology, VSB-TU OstravaDepartment of Mechanical, Chemical and Industrial Design Engineering, Universidad Politécnica de MadridDepartment of Mining Engineering and Safety, Faculty of Mining and Geology, VSB-TU OstravaDepartment of Mining Engineering and Safety, Faculty of Mining and Geology, VSB-TU OstravaDepartment of Mining Engineering and Safety, Faculty of Mining and Geology, VSB-TU OstravaDepartment of Mining Engineering and Safety, Faculty of Mining and Geology, VSB-TU OstravaDepartment of Mining Engineering and Safety, Faculty of Mining and Geology, VSB-TU OstravaAbstract This study introduces a comprehensive calibration technique for discrete element method (DEM) simulations. Its focus is on particles smaller than 2 mm and this showcase shows comparison between spherical and polyhedral particle shape calibration. Very fine powders or particulate materials with small particles are usually calibrated with upscaling. Unfortunately, some applications are dependent heavily on a quite precise particle size range, such as abrasion, crushing, pneumatic conveying, feeding, and dosing. Traditional DEM simulations often rely on spherical or multi-spherical particle models, which lack the precision needed, particularly due to the surface waviness introduced in the latter case. This limitation impacts dynamic industrial applications like mixing, hopper discharge, and abrasion. To address this gap, we present a comparative calibration approach for spherical and polyhedral particles, using silica sand as the test material. The calibration combines static and dynamic parameters such as rolling resistance, particle-to-particle restitution, and wall friction, validated through experiments on a powder flow calibration stand. Results revealed significant differences in flow dynamics, highlighting the enhanced realism of polyhedral models despite increased computational demands. This work provides a comprehensive framework for DEM calibration of fine particulate materials, specifically validated for particle sizes between 400 and 1500 µm, improving simulation accuracy and extending applicability across various industrial processes.https://doi.org/10.1038/s41598-025-04592-2Discrete element methodCalibration techniquePolyhedral particlesNon-spherical particlesSphere |
| spellingShingle | Jan Diviš David Žurovec Álvaro Ramírez-Gómez Jakub Hlosta Jiří Rozbroj Kamila Pokorná Jan Nečas Jiří Zegzulka DEM calibration insights on the role of particle shape for sub 2 mm particles Scientific Reports Discrete element method Calibration technique Polyhedral particles Non-spherical particles Sphere |
| title | DEM calibration insights on the role of particle shape for sub 2 mm particles |
| title_full | DEM calibration insights on the role of particle shape for sub 2 mm particles |
| title_fullStr | DEM calibration insights on the role of particle shape for sub 2 mm particles |
| title_full_unstemmed | DEM calibration insights on the role of particle shape for sub 2 mm particles |
| title_short | DEM calibration insights on the role of particle shape for sub 2 mm particles |
| title_sort | dem calibration insights on the role of particle shape for sub 2 mm particles |
| topic | Discrete element method Calibration technique Polyhedral particles Non-spherical particles Sphere |
| url | https://doi.org/10.1038/s41598-025-04592-2 |
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