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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Molecular dynamics study on flow structure inside a thermal transpiration flow field

http://hdl.handle.net/2237/0002001514
http://hdl.handle.net/2237/0002001514
13a6874c-9b05-4bbf-8e3d-7020ec3c1de4
名前 / ファイル ライセンス アクション
5_0034146.pdf 5_0034146.pdf (3.3 MB)
Item type itemtype_ver1(1)
公開日 2021-10-15
タイトル
タイトル Molecular dynamics study on flow structure inside a thermal transpiration flow field
言語 en
著者 Yamaguchi, Hiroki

× Yamaguchi, Hiroki

en Yamaguchi, Hiroki

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Kikugawa, Gota

× Kikugawa, Gota

en Kikugawa, Gota

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 Copyright 2021 Author(s). Published under an exclusive license by AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.The following article appeared in (Physics of Fluids 33, 012005 (2021)) and may be found at (https://doi.org/10.1063/5.0034146).
内容記述
内容記述 Thermal transpiration flow is a thermally driven flow from a cold part toward a hot part using a temperature gradient along a wall under a high Knudsen number condition. Many studies have used this type of flow as a pump for microtechnology. The flows adopted in these studies were, in most cases, in the slip or transitional regime. Accordingly, in this research, thermal transpiration flow through a two-dimensional channel with nanoscale clearance in the height direction was studied using the molecular dynamics method. The solid atoms composing the channel walls were explicitly considered. The center part of the nanochannel was controlled as a hot reservoir, whereas both ends of the nanochannel were kept cold. The temperatures of the channel wall atoms were also controlled based on their positions by linearly interpolating the temperature between the hot and cold reservoirs. Two Knudsen number conditions were adopted by changing the width of the computational cell. To study the mean velocity distribution inside the nanochannel, these simulations were performed for 10 ns. We successfully obtained a mean velocity distribution inside the nanochannel, showing the thermal transpiration flow in the vicinity of the channel wall using the pressure-driven counterflow at the center in the height direction even under the dense gas condition. The velocity profile across the nanochannel in the height direction indicated that thermal transpiration flow was induced in the adsorption layer of gas molecules on the channel wall under the dense gas condition.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 AIP Publishing
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
関連情報
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1063/5.0034146
収録物識別子
収録物識別子タイプ PISSN
収録物識別子 1070-6631
書誌情報 en : Physics of Fluids

巻 33, 号 1, p. 012005, 発行日 2021-01-08
ファイル公開日
日付 2022-01-08
日付タイプ Available
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