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気泡を含んだ液体の見かけの粘性についての実験的研究
https://doi.org/10.15083/0000033070
https://doi.org/10.15083/000003307032320b32-56bb-4558-aa55-48b310df1994
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ji0553011.pdf (744.8 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2008-05-30 | |||||
| タイトル | ||||||
| タイトル | 気泡を含んだ液体の見かけの粘性についての実験的研究 | |||||
| 言語 | ja | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | departmental bulletin paper | |||||
| ID登録 | ||||||
| ID登録 | 10.15083/0000033070 | |||||
| ID登録タイプ | JaLC | |||||
| その他のタイトル | ||||||
| その他のタイトル | Experimental Study on the Effect of Bubble Concentration on the Effective Viscosity of Liquids | |||||
| 著者 |
宇平, 幸一
× 宇平, 幸一 |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 128980 | |||||
| 姓名 | Uhira, Kohichi | |||||
| 著者所属 | ||||||
| 著者所属 | 東京大学地震研究所 | |||||
| 著者所属 | ||||||
| 著者所属 | 富山大学理学部 | |||||
| 著者所属 | ||||||
| 著者所属 | 山形大学理学部 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | It is widely accepted that the volatile gas in magma plays an important role in volcanic eruptions. With the ascent of magma, pressure gradually decreases and increases the degree of supersaturation of volatile components and consequently, nucleation of the gas phase is initiated. Though the dynamical process of magma in a volcanic conduit is very complicated, the viscosity of magma is known to be a fundamentally important factor. As for the effective viscosity of a liquid containing small concentration of bubbles, Taylor, Batchelor and Shimozuru derived theoretically the following formula, ηe/η0 = (1 + φ), where φ is the volume concentration of bubbles. But if violent nucleation happens, the concentration of bubbles will increase rapidly and the interaction of bubbles will not be ignored. The author tried to examine experimentally how the effective viscosity varies when bubble concentration is large. The viscosity was measured using a specially deviced rotation viscometer in which air bubbles were injected from the bottom into silicon oil. The torque of the inner cylinder was measured for various bubble concentration. The results of experiments show that the change of the effective viscosity coincides with the theoretical predicted curve within the bubble concentration below 30%, above which, the experimental value tends to increase. The empirical formula which is written below is the best fit curve of the change of the effective viscosity of liquid which contains bubbles with volume fraction less than 40%. ηe/η0=(1-1.5φ)-0.55 (O.O<φ<O.4). | |||||
| 書誌情報 |
東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo 巻 55, 号 3, p. 857-871, 発行日 1981-03-07 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 00408972 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00162258 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 453 | |||||
| 出版者 | ||||||
| 出版者 | 東京大学地震研究所 | |||||
| 出版者別名 | ||||||
| Earthquake Research Institute, University of Tokyo | ||||||
