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Liquid temperature dependence of kinetic boundary condition at vapor–liquid interface

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Title: Liquid temperature dependence of kinetic boundary condition at vapor–liquid interface
Authors: Kon, Misaki Browse this author
Kobayashi, Kazumichi Browse this author →KAKEN DB
Watanabe, Masao Browse this author
Keywords: Kinetic boundary condition
Evaporation and condensation
Vapor–liquid interface
Kinetic theory of gases
Issue Date: Aug-2016
Publisher: Elsevier
Journal Title: International Journal of Heat and Mass Transfer
Volume: 99
Start Page: 317
End Page: 326
Publisher DOI: 10.1016/j.ijheatmasstransfer.2016.03.088
Abstract: For the accurate description of heat and mass transfer through a vapor–liquid interface, the appropriate modeling of the interface during nonequilibrium phase change (net evaporation/condensation) is a crucial issue. The aim of this study is to propose a microscopic interfacial model which should be imposed at the interface as the kinetic boundary condition for the Boltzmann equation. In this study, we constructed the kinetic boundary condition for monoatomic molecules over a wide range of liquid temperature based on mean field kinetic theory, and we validated the accuracy of the constructed kinetic boundary condition by solving the boundary value problem of the Boltzmann equation. These results showed that we can impose the kinetic boundary condition at the interface by simply specifying liquid temperature and simulate the complex vapor–liquid two-phase flow induced by net evaporation/condensation. Furthermore, we applied the constructed kinetic boundary condition to the boundary condition for the fluid-dynamic-type equations. This application enables us to deal with a large spatio-temporal scale of the interfacial dynamics in the vapor–liquid two-phase system with net evaporation/condensation.
Rights: © 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
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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