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For acetone, the temperature oscillation frequency increased nearly linearly with the disk temperature difference, but inversely with the aspect ratio. For the partially open system, the oscillation frequencies were about 20 percent greater than those determined for the closed system at the same Delta-T. The variation of the temperature oscillation frequency with Delta-T was in qualitative agreement with that predicted previously by a numerical simulation. Vibration experiments were conducted with acetone, water and silicone oil bridges, by applying horizontal vibrations of different amplitudes and frequencies. For an isothermal water bridge, the surface oscillation amplitude was found to be strongly dependent on the volume ratio of the liquid bridge, and the oscillation frequency was much larger than the frequency of the vibrations applied. A previous vibration model for a straight cylinder was modified to predict the vibration frequency of a hyperboloid-shaped liquid bridge. 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Investigation of horizontal vibrations on Marangoni convection in a liquid bridge
https://jaxa.repo.nii.ac.jp/records/42850
https://jaxa.repo.nii.ac.jp/records/428500380d1b3-0d45-4369-8bb0-d30b80c5d2f1
名前 / ファイル | ライセンス | アクション |
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45403004.pdf (1.2 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 | Investigation of horizontal vibrations on Marangoni convection in a liquid bridge | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Marangoni対流 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 液橋 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 水平振動 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Prandtl数 | |||||
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 | 蒸発 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | アセトン | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 表面振動 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 軸対称流 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 微小重力 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 振動流 | |||||
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 | liquid bridge | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | horizontal vibration | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Prandtl number | |||||
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 | evaporation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | acetone | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | surface oscillation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | axisymmetric flow | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | microgravity | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | oscillating flow | |||||
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 | 液橋におけるマランゴニ対流上の水平振動の研究 | |||||
著者 |
川路, 正裕
× 川路, 正裕× NasrEsfahany, M.× Simic, S.× Kawaji, Masahiro× NasrEsfahany, M.× Simic, S. |
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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: Marangoni Convection Modeling Research: Annual Report April 1, 2001-March 31, 2002 en : NASDA Technical Memorandum: Marangoni Convection Modeling Research: Annual Report April 1, 2001-March 31, 2002 p. 107-128, 発行日 2002-12-27 |
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抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | An experimental investigation has been conducted on Marangoni convection in liquid bridges of 7 mm diameter with acetone (Pr = 4.3) and 5 cSt silicone oil (Pr = 67) to investigate the temperature oscillation characteristics and the effects of small horizontal vibrations on the onset of oscillatory flow and surface dynamics. For acetone, the temperature oscillation frequency increased nearly linearly with the disk temperature difference, but inversely with the aspect ratio. For the partially open system, the oscillation frequencies were about 20 percent greater than those determined for the closed system at the same Delta-T. The variation of the temperature oscillation frequency with Delta-T was in qualitative agreement with that predicted previously by a numerical simulation. Vibration experiments were conducted with acetone, water and silicone oil bridges, by applying horizontal vibrations of different amplitudes and frequencies. For an isothermal water bridge, the surface oscillation amplitude was found to be strongly dependent on the volume ratio of the liquid bridge, and the oscillation frequency was much larger than the frequency of the vibrations applied. A previous vibration model for a straight cylinder was modified to predict the vibration frequency of a hyperboloid-shaped liquid bridge. The predictions of the modified model showed qualitative agreement with the measurements. For acetone and silicone oil bridges, vibrations of different amplitudes and frequencies were applied to determine their effects on the critical temperature difference. For increasing the temperature difference, ramp and step increase methods were used for acetone and silicone oil bridges, respectively. For a vibrating liquid bridge, a step increase method was found to be more appropriate for obtaining more accurate critical Delta-T data. The critical temperature difference was then measured for acetone and silicone oil bridges vibrated at different acceleration levels, but no apparent effect of vibration could be observed on the critical temperature difference in the ranges of variables covered. The response of the liquid bridge surface was also recorded by a video camera and the surface motion was analyzed for different volume and aspect ratios. Greater amplitudes of surface vibration were measured when the disk temperature difference was greater than the critical value compared to an isothermal liquid bridge. The surface oscillation amplitude was also found to increase with the distance below the hot corner. | |||||
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: AA0045403004 | |||||
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-020026E |