Transition time of a bouncing drop
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866929562940604416 |
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| author | Liu, Yahua Hosseini, Seyed Ali Liu, Cong Feinberg, Milo Dorschner, Benedikt Wang, Zuankai Karlin, Ilya |
| author_facet | Liu, Yahua Hosseini, Seyed Ali Liu, Cong Feinberg, Milo Dorschner, Benedikt Wang, Zuankai Karlin, Ilya |
| contents | Contact time of bouncing drops is one of the most essential parameters to quantify the water-repellency of surfaces. Generally, the contact time on superhydrophobic surfaces is known to be Weber number-independent. Here, we probe an additional characteristic time, \emph{transition time} inherent in water drop impacting on superhydrophobic surfaces, marking a switch from a predominantly lateral to an axial motion. Systematic experiments and numerical simulations show that the transition time is also Weber number-independent and accounts for half the contact time. Additionally we identify a Weber-independent partition of volume at the maximum spreading state between the rim and lamella and show that the latter contains 1/4 of the total volume of the drop. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_20821 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Transition time of a bouncing drop Liu, Yahua Hosseini, Seyed Ali Liu, Cong Feinberg, Milo Dorschner, Benedikt Wang, Zuankai Karlin, Ilya Fluid Dynamics Contact time of bouncing drops is one of the most essential parameters to quantify the water-repellency of surfaces. Generally, the contact time on superhydrophobic surfaces is known to be Weber number-independent. Here, we probe an additional characteristic time, \emph{transition time} inherent in water drop impacting on superhydrophobic surfaces, marking a switch from a predominantly lateral to an axial motion. Systematic experiments and numerical simulations show that the transition time is also Weber number-independent and accounts for half the contact time. Additionally we identify a Weber-independent partition of volume at the maximum spreading state between the rim and lamella and show that the latter contains 1/4 of the total volume of the drop. |
| title | Transition time of a bouncing drop |
| topic | Fluid Dynamics |
| url | https://arxiv.org/abs/2410.20821 |