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Effects of small vibrations on Marangoni convection in a liquid bridge and numerical simulation of surface oscillation
https://jaxa.repo.nii.ac.jp/records/42953
https://jaxa.repo.nii.ac.jp/records/4295312d7bcca-5ff0-41ed-b139-d0ec8c3951bf
名前 / ファイル | ライセンス | アクション |
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46980004.pdf (2.4 MB)
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Item type | テクニカルレポート / Technical Report(1) | |||||
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公開日 | 2015-03-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Effects of small vibrations on Marangoni convection in a liquid bridge and numerical simulation of surface oscillation | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 数値シミュレーション | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 液柱 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 臨界温度 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 3次元モデル | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | マランゴニ対流 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 振動流 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 温度勾配 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 表面張力 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | numerical simulation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | liquid bridge | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | critical temperature | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | 3 dimensional model | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Marangoni convection | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | oscillating flow | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | temperature gradient | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | surface tension | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_18gh | |||||
資源タイプ | technical report | |||||
その他のタイトル | ||||||
その他のタイトル | 液柱におけるマランゴニ対流の小振動の影響および表面振動の数値シミュレーション | |||||
著者 |
Liang, R. Q.
× Liang, R. Q.× N.Esfahany, M.× 川路, 正裕× Liang, R. Q.× N.Esfahany, M.× Kawaji, Masahiro |
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著者所属 | ||||||
University of Toronto Dept. of Chemical Eng. and Applied Chem. | ||||||
著者所属 | ||||||
University of Toronto Dept. of Chemical Eng. and Applied Chem. | ||||||
著者所属 | ||||||
University of Toronto Dept. of Chemical Eng. and Applied Chem. | ||||||
著者所属(英) | ||||||
en | ||||||
University of Toronto Department of Chemical Engineering and Applied Chemistry | ||||||
著者所属(英) | ||||||
en | ||||||
University of Toronto Department of Chemical Engineering and Applied Chemistry | ||||||
著者所属(英) | ||||||
en | ||||||
University of Toronto Department of Chemical Engineering and Applied Chemistry | ||||||
出版者 | ||||||
出版者 | 宇宙開発事業団 | |||||
出版者(英) | ||||||
出版者 | National Space Development Agency of Japan (NASDA) | |||||
書誌情報 |
宇宙開発事業団技術報告: マランゴニ対流現象モデル研究:アニュアルレポート2002 en : NASDA Technical Memorandum: Marangoni Convection Modeling Research: Annual Report April 1, 2002-March 31, 2003 p. 99-119, 発行日 2003-08-29 |
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抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The effects of small vibrations on Marangoni convection were investigated using a liquid bridge of 5cSt silicone oil with a disk diameter of 7.0 mm, and an aspect ratio close to 0.5. Experiments were performed to determine the critical temperature difference data for no vibration case and with small vibrations applied. The surface oscillation amplitude was also determined experimentally, and a 3-D numerical simulation model was developed using a level set algorithm to predict the surface oscillations of an isothermal liquid bridge. The experimental results have shown that the effect of small vibrations on the onset of oscillatory flow is small since the critical temperature difference data for different aspect ratios were not affected by the vibrations. This is consistent with the results obtained for acetone bridges reported in the previous year. The peak amplitudes of surface oscillations decreased as the disk temperature difference was increased and the average liquid temperature decreased. This can be attributed to an increase in surface tension which stabilizes the liquid bridge surface. The surface oscillation amplitude, however, showed an abrupt increase at the onset of oscillatory Marangoni convection, and then a decrease as the temperature difference was further increased above the critical value. The reason for this variation in the surface oscillation amplitude with the temperature difference is unclear and needs to be investigated further. To clarify the surface oscillation phenomena induced by external vibrations, experiments and numerical simulations were conducted for an isothermal silicone oil bridge of 7.0 mm diameter. By subjecting the liquid bridge to small random vibrations, the surface oscillation frequency could be clearly determined. The computational results have also shown a similar surface oscillation frequency. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1345-7888 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00364784 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: AA0046980004 | |||||
レポート番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | レポート番号: NASDA-TMR-030004E |