General model for segregation forces in flowing granular mixtures
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
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| _version_ | 1866916487442202624 |
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| author | Duan, Yifei Jing, Lu Umbanhowar, Paul B. Ottino, Julio M. Lueptow, Richard M. |
| author_facet | Duan, Yifei Jing, Lu Umbanhowar, Paul B. Ottino, Julio M. Lueptow, Richard M. |
| contents | Particle segregation in dense flowing size-disperse granular mixtures is driven by gravity and shear, but predicting the associated segregation force due to both effects has remained an unresolved challenge. Here, a model of the combined gravity- and kinematics-induced segregation force on a single intruder particle is integrated with a model of the concentration dependence of the gravity-induced segregation force. The result is a general model of the net particle segregation force in flowing size-bidisperse granular mixtures. Using discrete element method simulations for comparison, the model correctly predicts the segregation force for a variety of mixture concentrations and flow conditions in both idealized and natural shear flows. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_13273 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | General model for segregation forces in flowing granular mixtures Duan, Yifei Jing, Lu Umbanhowar, Paul B. Ottino, Julio M. Lueptow, Richard M. Soft Condensed Matter Particle segregation in dense flowing size-disperse granular mixtures is driven by gravity and shear, but predicting the associated segregation force due to both effects has remained an unresolved challenge. Here, a model of the combined gravity- and kinematics-induced segregation force on a single intruder particle is integrated with a model of the concentration dependence of the gravity-induced segregation force. The result is a general model of the net particle segregation force in flowing size-bidisperse granular mixtures. Using discrete element method simulations for comparison, the model correctly predicts the segregation force for a variety of mixture concentrations and flow conditions in both idealized and natural shear flows. |
| title | General model for segregation forces in flowing granular mixtures |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2309.13273 |