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Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Année : 2014

Leidenfrost effect: Accurate drop shape modeling and refined scaling laws

Benjamin Sobac
P Colinet
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Résumé

We here present a simple fitting-parameter-free theory of the Leidenfrost effect (droplet levitation above a superheated plate) covering the full range of stable shapes, i.e., from small quasispherical droplets to larger puddles floating on a pocketlike vapor film. The geometry of this film is found to be in excellent quantitative agreement with the interferometric measurements of Burton et al. [Phys. Rev. Lett. 109, 074301 (2012)]. We also obtain new scalings generalizing classical ones derived by Biance et al. [Phys. Fluids 15, 1632 (2003)] as far as the effect of plate superheat is concerned and highlight the relative role of evaporation, gravity, and capillarity in the vapor film. To further substantiate these findings, a treatment of the problem by matched asymptotic expansions is also presented.

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hal-03857627 , version 1 (17-11-2022)

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Benjamin Sobac, A Rednikov, S Dorbolo, P Colinet. Leidenfrost effect: Accurate drop shape modeling and refined scaling laws. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2014, 90, ⟨10.1103/physreve.90.053011⟩. ⟨hal-03857627⟩
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