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Influence of liquid–solid intermolecular force on levitation of impacting nanodroplet

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Title: Influence of liquid–solid intermolecular force on levitation of impacting nanodroplet
Authors: Tabe, Hirofumi Browse this author
Kobayashi, Kazumichi Browse this author →KAKEN DB
Yaguchi, Hisao Browse this author
Fujii, Hiroyuki Browse this author →KAKEN DB
Watanabe, Masao Browse this author
Keywords: Molecular dynamics simulation
Leidenfrost effect
Intermolecular force
Adsorption layer
Issue Date: Apr-2019
Publisher: Springer
Journal Title: Heat and Mass Transfer
Volume: 55
Issue: 4
Start Page: 993
End Page: 1003
Publisher DOI: 10.1007/s00231-018-2474-4
Abstract: When droplets impact on a heated wall, they can levitate owing to the vapor stream generated by the droplet evaporation. This phenomenon is called the Leidenfrost effect, and the vapor layer prevents heat transfer between the droplet and heated wall. In this study, we investigated the influence of the intermolecular force between liquid and solid molecules on the levitating phenomenon, which is caused by heat transfer, for nanodroplets. We used a molecular dynamics (MD) simulation to evaluate the detailed behavior of droplet levitation and investigated the temperature field of the impacting droplet. We found that the droplet levitation was likely to occur at lower temperature when the intermolecular force was stronger. In addition, when the intermolecular force was strong enough, the liquid molecules stayed on the heated wall and an adsorption layer was formed. This adsorption layer exceeded the critical temperature of the liquid molecules, and the existence of the adsorption layer significantly affected the onset of the droplet levitation.
Rights: The final publication is available at
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小林 一道

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