Terminal velocities of a deformed Leidenfrost liquid: Experiments and self-propulsion model

Guanqi Wang; Jonathan McDonough; Vladimir Zivkovic; Teng Long; Zuankai Wang; Steven Wang

doi:10.1103/PhysRevFluids.7.033602

Terminal velocities of a deformed Leidenfrost liquid: Experiments and self-propulsion model

Guanqi Wang
, Jonathan McDonough
, Vladimir Zivkovic
, Teng Long
, Zuankai Wang
, Steven Wang^*

^*Corresponding author for this work

Department of Mechanical Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

6 Citations (Scopus)

47 Downloads (CityUHK Scholars)

Abstract

We derive a model entirely from first principles to explain the Leidenfrost self-propulsion phenomenon in a quantitative way, where the deformable nature of the liquid has been taken into account. Experiments show a good agreement with our model, suggesting this model supersedes the limited scaling analysis previously given in the literature. Our annular ring design enables liquid droplets to reach high terminal velocities, up to 0.42 ± 0.04 m/s, which is potentially beneficial to energy harvesting and flow chemistry applications.

Original language	English
Article number	033602
Journal	Physical Review Fluids
Volume	7
Issue number	3
Online published	14 Mar 2022
DOIs	https://doi.org/10.1103/PhysRevFluids.7.033602
Publication status	Published - Mar 2022

Publisher's Copyright Statement

COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: Wang, G., McDonough, J., Zivkovic, V., Long, T., Wang, Z., & Wang, S. (2022). Terminal velocities of a deformed Leidenfrost liquid: Experiments and self-propulsion model. Physical review fluids, 7(3), Article 033602. https://doi.org/10.1103/PhysRevFluids.7.033602. The copyright of this article is owned by American Physical Society.

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abstract = "We derive a model entirely from first principles to explain the Leidenfrost self-propulsion phenomenon in a quantitative way, where the deformable nature of the liquid has been taken into account. Experiments show a good agreement with our model, suggesting this model supersedes the limited scaling analysis previously given in the literature. Our annular ring design enables liquid droplets to reach high terminal velocities, up to 0.42 ± 0.04 m/s, which is potentially beneficial to energy harvesting and flow chemistry applications.",

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AU - Wang, Guanqi

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AU - Zivkovic, Vladimir

AU - Long, Teng

AU - Wang, Zuankai

AU - Wang, Steven

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Y1 - 2022/3

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AB - We derive a model entirely from first principles to explain the Leidenfrost self-propulsion phenomenon in a quantitative way, where the deformable nature of the liquid has been taken into account. Experiments show a good agreement with our model, suggesting this model supersedes the limited scaling analysis previously given in the literature. Our annular ring design enables liquid droplets to reach high terminal velocities, up to 0.42 ± 0.04 m/s, which is potentially beneficial to energy harvesting and flow chemistry applications.

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Terminal velocities of a deformed Leidenfrost liquid: Experiments and self-propulsion model

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