An immersed boundary method for particle-resolved simulations of arbitrary-shaped rigid particles
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917988494475264 |
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| author | Schenk, Maximilian García-Villalba, Manuel Dušek, Jan Uhlmann, Markus Moriche, Manuel |
| author_facet | Schenk, Maximilian García-Villalba, Manuel Dušek, Jan Uhlmann, Markus Moriche, Manuel |
| contents | The present work extends the direct-forcing immersed boundary method introduced by García-Villalba et al. (2023), broadening its application from spherical to arbitrarily-shaped particles, while maintaining its capacity to address both neutrally-buoyant and light objects (down to a density ratio of 0.5). The proposed method offers a significant advantage over existing methods regarding its simplicity, in particular for the case of neutrally-buoyant particles. Three test cases from the literature are selected for validation: a neutrally-buoyant prolate spheroid in a shear flow; a settling oblate spheroid; and, finally, a rising oblate spheroid. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_12847 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | An immersed boundary method for particle-resolved simulations of arbitrary-shaped rigid particles Schenk, Maximilian García-Villalba, Manuel Dušek, Jan Uhlmann, Markus Moriche, Manuel Fluid Dynamics The present work extends the direct-forcing immersed boundary method introduced by García-Villalba et al. (2023), broadening its application from spherical to arbitrarily-shaped particles, while maintaining its capacity to address both neutrally-buoyant and light objects (down to a density ratio of 0.5). The proposed method offers a significant advantage over existing methods regarding its simplicity, in particular for the case of neutrally-buoyant particles. Three test cases from the literature are selected for validation: a neutrally-buoyant prolate spheroid in a shear flow; a settling oblate spheroid; and, finally, a rising oblate spheroid. |
| title | An immersed boundary method for particle-resolved simulations of arbitrary-shaped rigid particles |
| topic | Fluid Dynamics |
| url | https://arxiv.org/abs/2504.12847 |