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Modeling Leidenfrost levitation of soft elastic solids
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Binysh, Jack, Chakraborty, Indrajit, Chubynsky, Mykyta, Diaz Melian, Vicente Luis, Waitukaitis, Scott R., Sprittles, James E. and Souslov, Anton (2023) Modeling Leidenfrost levitation of soft elastic solids. Physical Review Letters . ISSN 0031-9007. (In Press)
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WRAP-modeling-Leidenfrost-levitation-soft-elastic-solids-2023.pdf - Accepted Version - Requires a PDF viewer. Download (2597Kb) | Preview |
Official URL: https://journals.aps.org/prl/accepted/4607fY55Hdf1...
Abstract
The elastic Leidenfrost effect occurs when a vaporizable soft solid is lowered onto a hot surface. Evaporative flow couples to elastic deformation, giving spontaneous bouncing or steady-state floating. The effect embodies an unexplored interplay between thermodynamics, elasticity, and lubrication: despite being observed, its basic theoretical description remains a challenge. Here, we provide a theory of elastic Leidenfrost floating. As weight increases, a rigid solid sits closer to the hot surface. By contrast, we discover an elasticity-dominated regime where the heavier the solid, the higher it floats. This geometry-governed behavior is reminiscent of the dynamics of large liquid Leidenfrost drops. We show that this elastic regime is characterized by Hertzian behavior of the solid’s underbelly and derive how the float height scales with materials parameters. Introducing a dimensionless elastic Leidenfrost number, we capture the crossover between rigid and Hertzian behavior. Our results provide theoretical underpinning for recent experiments, and point to the design of novel soft machines.
| Item Type: | Journal Article | |||||||||||||||||||||
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| Subjects: | Q Science > QC Physics | |||||||||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Mathematics | |||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Film boiling, Thermodynamics, Lubrication and lubricants -- Fluid dynamics | |||||||||||||||||||||
| Journal or Publication Title: | Physical Review Letters | |||||||||||||||||||||
| Publisher: | American Physical Society | |||||||||||||||||||||
| ISSN: | 0031-9007 | |||||||||||||||||||||
| Official Date: | 5 September 2023 | |||||||||||||||||||||
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| Status: | Peer Reviewed | |||||||||||||||||||||
| Publication Status: | In Press | |||||||||||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||
| Copyright Holders: | ©2023 American Physical Society | |||||||||||||||||||||
| Date of first compliant deposit: | 12 September 2023 | |||||||||||||||||||||
| Date of first compliant Open Access: | 13 September 2023 | |||||||||||||||||||||
| RIOXX Funder/Project Grant: |
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