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Experimental works for intermediate and low Pr: Experimental study of thermocapillary flow in the half-zone liquid bridge of low prandtl number fluid
https://jaxa.repo.nii.ac.jp/records/41248
https://jaxa.repo.nii.ac.jp/records/41248f9e5a799-0876-43d6-b824-18d0cf68a1eb
名前 / ファイル | ライセンス | アクション |
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10763004.pdf (9.9 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 | Experimental works for intermediate and low Pr: Experimental study of thermocapillary flow in the half-zone liquid bridge of low prandtl number fluid | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 熱毛細管拡散 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 液体ブリッジ | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | プラントル数 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 表面温度 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 変動 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 温度分布 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 流動分布 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 流れの可視化 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | thermocapillary migration | |||||
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 | Prandtl number | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | surface temperature | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | variation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | temperature distribution | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | flow distribution | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | flow visualization | |||||
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 | 低プラントル数流体の半ゾーン液体ブリッジにおける熱毛細管流の実験的研究 | |||||
著者 |
高木, 克彦
× 高木, 克彦× 大高, 雅彦× 夏井, 秀定× 新井, 達也× 依田, 真一× Takagi, Katsuhiko× Otaka, Masahiko× Natsui, Hidesada× Arai, Tatsuya× Yoda, Shinichi |
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著者所属 | ||||||
宇宙開発事業団 宇宙環境利用研究センター | ||||||
著者所属 | ||||||
宇宙開発事業団 宇宙環境利用研究センター | ||||||
著者所属 | ||||||
エイ・イー・エス | ||||||
著者所属 | ||||||
宇宙開発事業団 宇宙環境利用研究センター | ||||||
著者所属 | ||||||
宇宙開発事業団 宇宙環境利用研究センター | ||||||
著者所属(英) | ||||||
en | ||||||
National Space Development Agency of Japan Space Utilization Research Center | ||||||
著者所属(英) | ||||||
en | ||||||
National Space Development Agency of Japan Space Utilization Research Center | ||||||
著者所属(英) | ||||||
en | ||||||
Advanced Engineering Services Co. Ltd. | ||||||
著者所属(英) | ||||||
en | ||||||
National Space Development Agency of Japan Space Utilization Research Center | ||||||
著者所属(英) | ||||||
en | ||||||
National Space Development Agency of Japan Space Utilization Research Center | ||||||
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, 1999 - March 31, 2000 en : NASDA Technical Memorandum: Marangoni Convection Modeling Research: Annual Report April 1, 1999 - March 31, 2000 p. 115-156, 発行日 2000-09-29 |
|||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Oscillatory thermocapillary flow of low Prandtl number fluid in the half-floating zone was experimentally studied under normal gravity. Measurement technique in surface temperature of a liquid bridge of tin as a test fluid was developed. Theoretical investigation of radiation energy from molten tin showed that PbS photo detector can measure proper wavelength range with high radiation energy, combined with use of CaF2 optical pass filter. It was confirmed that the selected radiation thermometer had temperature resolution that was smaller than amplitude of temperature fluctuation of oscillatory flow. The new measuring technique made it possible to observe surface temperature fluctuations successfully by using the ex-chamber in which CaF2 optical pass filter has not been installed. The periodic fluctuation continued approximately 100 sec, then damped gradually, suggesting that reduction in temperature dependence of 7.6 K was observed for onset of the periodic flow, which was almost good agreement with the numerical result with 7.1 K. It should be noted here the second bifurcation point, which has never observed yet, could be detected by the present experiments. Considerations for surface science of tin led to the design of unique experiment apparatus where clean surface of molten tin was able to obtain and sustain during an experiment. Ar(+) ion etching method was applied to remove residual surface oxides, and effectiveness of the etching was confirmed by the installed ion gun that was designed for surface cleaning. Prevention of further oxidation under vacuum condition of about 10(exp -6) Pa during one experiment was experimentally verified by in situ measurements of surface tension of molten tin. Novel visualization technique (3D-UV) of flow field measurements for liquid metals using ultrasonic transducer with high heat resistance is currently under development for the experiments. It was concluded that the first bifurcation point could be detected precisely by 3D-UV technique with the consideration of the experimentally predicted performances such as a resolution, a minimum size of a tracer, and a signal processing method. 3D-UV can visualize flow field of the liquid bridge in which the aspect ratio is a range of 2.3 (a = 1.5 mm) to 0.8 (a = 5 mm). The visualization technique requires development of unique balloon-like tracer also. It was confirmed that the balloon tracer with good sphericity could be actually manufactured by electroless plating of Ni over surface of Shirasu-balloon, which is an expanded volcanic particle, subsequently by electrolysis plating of Fe. | |||||
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: AA0010763004 | |||||
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-000006E |