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Molecular dynamics study of evaporation induced by locally heated argon liquid

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Title: Molecular dynamics study of evaporation induced by locally heated argon liquid
Authors: Tabe, Hirofumi Browse this author
Hiramatsu, Kiryu Browse this author
Kobayashi, Kazumichi Browse this author →KAKEN DB
Fujii, Hiroyuki Browse this author →KAKEN DB
Watanabe, Masao Browse this author →KAKEN DB
Totani, Tsuyoshi Browse this author →KAKEN DB
Keywords: Evaporation
Molecular dynamics
Kinetic boundary condition
Issue Date: 25-Jul-2022
Publisher: Elsevier
Journal Title: Applied Thermal Engineering
Volume: 212
Start Page: 118472
Publisher DOI: 10.1016/j.applthermaleng.2022.118472
Abstract: In this study, we conducted molecular dynamics simulations of the evaporation of locally heated argon liquid to construct the kinetic boundary condition (KBC) for the evaporation. The KBC denotes the boundary condition of the Boltzmann equation, and the mass, momentum, and heat fluxes through the interface can be determined by solving the Boltzmann equation with the KBC. From the results, we established a method for constructing the KBC for the evaporation of locally heated argon liquid. Furthermore, we found that the velocity distribution of the KBC immediately after liquid heating becomes anisotropic, which means that the normal and tangential temperatures composed of outgoing molecules from the liquid phase to the gas phase take different values when the liquid interface is heated momentarily. From the present study, we can elucidate the mechanism of the occurrence of net evaporation mass flux due to the locally heated liquid film, e.g., the spot heating by infrared radiation.
Rights: © 2022 The Author(s). Published by Elsevier Ltd.
Type: article
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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