A numerical study on the coefficient of restitution of wet collisions
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
| Veröffentlicht: |
2026
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| _version_ | 1866918406511394816 |
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| author | Singh, Abhishek Kumar Windows-Yule, Christopher Robert Kit Nair, Prapanch |
| author_facet | Singh, Abhishek Kumar Windows-Yule, Christopher Robert Kit Nair, Prapanch |
| contents | Using smoothed particle hydrodynamics (SPH) simulations, we investigate the coefficient of restitution (COR) in wet collisions and identify a scaling law governing its behavior. The simulations employ an updated-Lagrangian, mesh-free framework that is validated against experimental measurements. We neglect surface tension effects since the impact conditions correspond to a moderate-to-high Weber number regime. The COR is found to depend on the Stokes number and a dimensionless film thickness defined as the ratio of the liquid film thickness to the diameter of the impacting solid bead. Two distinct regimes are observed, each characterized by different power-law exponents. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_23100 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A numerical study on the coefficient of restitution of wet collisions Singh, Abhishek Kumar Windows-Yule, Christopher Robert Kit Nair, Prapanch Fluid Dynamics Computational Physics Using smoothed particle hydrodynamics (SPH) simulations, we investigate the coefficient of restitution (COR) in wet collisions and identify a scaling law governing its behavior. The simulations employ an updated-Lagrangian, mesh-free framework that is validated against experimental measurements. We neglect surface tension effects since the impact conditions correspond to a moderate-to-high Weber number regime. The COR is found to depend on the Stokes number and a dimensionless film thickness defined as the ratio of the liquid film thickness to the diameter of the impacting solid bead. Two distinct regimes are observed, each characterized by different power-law exponents. |
| title | A numerical study on the coefficient of restitution of wet collisions |
| topic | Fluid Dynamics Computational Physics |
| url | https://arxiv.org/abs/2603.23100 |