| Item type |
テクニカルレポート / Technical Report(1) |
| 公開日 |
2015-03-26 |
| タイトル |
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|
タイトル |
Effect of Thermodynamic Parameter on Cavitation in Rocket Inducer |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 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 |
ロケット用インデュ－サのキャビテ－ションに与える熱力学的パラメ－タの影響 |
| 著者 |
吉田, 義樹
菊田, 研吾
新井山, 一樹
渡邉, 聡
Yoshida, Yoshiki
Kikuta, Kengo
Niiyama, Kazuki
Watanabe, Satoshi
|
| 著者所属 |
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宇宙航空研究開発機構宇宙輸送ミッション本部宇宙輸送系推進技術研究開発センター(JAXA) |
| 著者所属 |
|
|
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宇宙航空研究開発機構宇宙輸送ミッション本部宇宙輸送系推進技術研究開発センター (JAXA) : IHI航空宇宙事業本部 |
| 著者所属 |
|
|
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宇宙航空研究開発機構宇宙輸送ミッション本部宇宙輸送系推進技術研究開発センター (JAXA) : 金沢工業大学工学部 |
| 著者所属 |
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九州大学大学院工学研究院 |
| 著者所属（英） |
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en |
|
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Space Transportation Propulsion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA) |
| 著者所属（英） |
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en |
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Space Transportation Propulsion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA) : Aero-Engine & Space Operations, IHI |
| 著者所属（英） |
|
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|
en |
|
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Space Transportation Propulsion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA) : Department of Mechanical Engineering, Kanazawa Institute of Technology |
| 著者所属（英） |
|
|
|
en |
|
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Department of Mechanical Engineering, Kyushu University |
| 出版者 |
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|
出版者 |
宇宙航空研究開発機構(JAXA) |
| 出版者（英） |
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|
出版者 |
Japan Aerospace Exploration Agency (JAXA) |
| 書誌情報 |
宇宙航空研究開発機構研究開発資料
en : JAXA Research and Development Memorandum
巻 JAXA-RM-12-006E,
p. 1-35,
発行日 2013-01-31
|
| 抄録（英） |
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|
内容記述タイプ |
Other |
|
内容記述 |
Cavitation is physically "a vaporization of liquid" which needs latent heat for phase change. A cavity grows in the liquid, so the latent heat of vaporization can only be supplied by the liquid surrounding the cavity. Thus, the liquid close to the interface region of the cavity is cooled down. |
| 抄録（英） |
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内容記述タイプ |
Other |
|
内容記述 |
In general, cryogenic liquids are very thermosensitive. For liquid hydrogen and oxygen used in rocket propulsion, the temperature in the cavity, i.e., the vapor pressure in the cavity, is lower than those of the liquid bulk. Thanks to this thermal effect, cavitation in cryogenic liquids is less developed than that in water at room temperature. This thermal effect on cavitation is beneficial in that it improves cavitation performance and alleviates cavitation instabilities in space inducers. |
| 抄録（英） |
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内容記述タイプ |
Other |
|
内容記述 |
In previous works, we investigated the relationship between the thermodynamic effect and the cavitation instabilities, e.g., rotating cavitation and cavitation surge, with a focus on the cavity length as an indication of cavitation. In the present work, first, aspects of cavitation in an inducer were observed by direct optical visualization in liquid nitrogen. Second, joint experiments in liquid nitrogen and cold water were conducted on a cavitaing inducer. In nitrogen experiments, operating conditions, i.e., rotational speed and liquid temperature, were varied to determine the cavitation scaling law. Through these experimental results, characteristic times, namely, the transit time for bubble growth and the characteristic thermal time introduced from the thermal property, were investigated as a cavitation thermodynamic parameter. It was found out that the adjustment of cavitation number has a good correlation with the ratio of the transit time and the characteristic thermal time. |
| 内容記述 |
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内容記述タイプ |
Other |
|
内容記述 |
形態: カラー図版あり |
| 内容記述（英） |
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|
内容記述タイプ |
Other |
|
内容記述 |
Physical characteristics: Original contains color illustrations |
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1349-1121 |
| 書誌レコードID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11983593 |
| 資料番号 |
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|
内容記述タイプ |
Other |
|
内容記述 |
資料番号: AA0065513000 |
| レポート番号 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
レポート番号: JAXA-RM-12-006E |
65513000.pdf (5.4 MB)
