A granular mechanics model study of the influence of non-spherical shape on aggregate collisions
Abstract Collisions between granular aggregates influence the size distribution of dust clouds. Granular aggregates may possess non-spherical shapes as a result of, for instance, previous collision processes. Here, we study aggregate collisions using a granular mechanics simulation code. Collisions...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-02-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-29247-y |
| _version_ | 1811165928066383872 |
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| author | Rahul Bandyopadhyay Herbert M. Urbassek |
| author_facet | Rahul Bandyopadhyay Herbert M. Urbassek |
| author_sort | Rahul Bandyopadhyay |
| collection | DOAJ |
| description | Abstract Collisions between granular aggregates influence the size distribution of dust clouds. Granular aggregates may possess non-spherical shapes as a result of, for instance, previous collision processes. Here, we study aggregate collisions using a granular mechanics simulation code. Collisions between spherical aggregates are compared to collisions of ellipsoidal aggregates of equal mass. As the most prominent result, we find that the growth velocity, i.e., the velocity above which the post-collision aggregates are smaller than before collision, is generally reduced for ellipsoidal aggregates. The reason hereto lies in the less compact structure of ellipsoids which allows for a larger degree of fragmentation in a ‘rim peel-off’ mechanism. On the other hand, relative fragment distributions are only little influenced by aggregate shape. |
| first_indexed | 2024-04-10T15:45:19Z |
| format | Article |
| id | doaj.art-672bca8eb100479bbc9d39a4506ea51c |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-10T15:45:19Z |
| publishDate | 2023-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-672bca8eb100479bbc9d39a4506ea51c2023-02-12T12:10:00ZengNature PortfolioScientific Reports2045-23222023-02-0113111010.1038/s41598-023-29247-yA granular mechanics model study of the influence of non-spherical shape on aggregate collisionsRahul Bandyopadhyay0Herbert M. Urbassek1Physics Department and Research Center OPTIMAS, University KaiserslauternPhysics Department and Research Center OPTIMAS, University KaiserslauternAbstract Collisions between granular aggregates influence the size distribution of dust clouds. Granular aggregates may possess non-spherical shapes as a result of, for instance, previous collision processes. Here, we study aggregate collisions using a granular mechanics simulation code. Collisions between spherical aggregates are compared to collisions of ellipsoidal aggregates of equal mass. As the most prominent result, we find that the growth velocity, i.e., the velocity above which the post-collision aggregates are smaller than before collision, is generally reduced for ellipsoidal aggregates. The reason hereto lies in the less compact structure of ellipsoids which allows for a larger degree of fragmentation in a ‘rim peel-off’ mechanism. On the other hand, relative fragment distributions are only little influenced by aggregate shape.https://doi.org/10.1038/s41598-023-29247-y |
| spellingShingle | Rahul Bandyopadhyay Herbert M. Urbassek A granular mechanics model study of the influence of non-spherical shape on aggregate collisions Scientific Reports |
| title | A granular mechanics model study of the influence of non-spherical shape on aggregate collisions |
| title_full | A granular mechanics model study of the influence of non-spherical shape on aggregate collisions |
| title_fullStr | A granular mechanics model study of the influence of non-spherical shape on aggregate collisions |
| title_full_unstemmed | A granular mechanics model study of the influence of non-spherical shape on aggregate collisions |
| title_short | A granular mechanics model study of the influence of non-spherical shape on aggregate collisions |
| title_sort | granular mechanics model study of the influence of non spherical shape on aggregate collisions |
| url | https://doi.org/10.1038/s41598-023-29247-y |
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