JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
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title熱力学的効果がインデューサの吸込み性能とキャビテーション不安定に与える影響
Other TitleThermodynamic effects on cavitation performance and instabilities in an inducer
Author(jpn)吉田 義樹; 菊田 研吾; 渡邉 光男; 橋本 知之; 永浦 克司; 大平 勝秀
Author(eng)Yoshida, Yoshiki; Kikuta, Kengo; Watanabe, Mitsuo; Hashimoto, Tomoyuki; Nagaura, Katsuji; Ohira, Katsuhide
Author Affiliation(jpn)宇宙航空研究開発機構 総合技術研究本部 角田宇宙センター; 宇宙航空研究開発機構; 宇宙航空研究開発機構 総合技術研究本部 角田宇宙センター; 宇宙航空研究開発機構 総合技術研究本部 角田宇宙センター; 航空宇宙技術振興財団; 東北大学流体科学研究所
Author Affiliation(eng)Japan Aerospace Exploration Agency Kakuda Space Center, Institute of Aerospace Technology; Japan Aerospace Exploration Agency; Japan Aerospace Exploration Agency Kakuda Space Center, Institute of Aerospace Technology; Japan Aerospace Exploration Agency Kakuda Space Center, Institute of Aerospace Technology; Foundation for Promotion of Japanese Aerospace Technology; Institute of Fluid Science, Tohoku University
Issue Date2006-12-22
PublisherJapan Aerospace Exploration Agency (JAXA)
宇宙航空研究開発機構
Publication date2006-12-22
Languagejpn
AbstractIn the present study, we focused on the length of the tip cavitation as a cavitation parameter for experimental investigations of the thermodynamic effect on a cavitating inducer. Comparison of the length of tip cavity in liquid nitrogen (76 K and 80 K) with that in cold water (296 K) allowed us to estimate the strength of the thermodynamic effect. In addition, unstable cavitation phenomena occur when the cavity length develops over the throat. Sub-synchronous rotating cavitation appears both in liquid nitrogen and in cold water. In contrast, cavitation surge appears only in cold water at a lower cavitation number. From these experimental results, thermodynamic effects on cavitation performance and instabilities were discussed.
DescriptionJAXA Research and Development Memorandum
宇宙航空研究開発機構研究開発資料
Keywordsinducer; cavitation flow; thermodynamic property; cavity length; cavitation surge; surge mode oscillation; inlet temperature; vortex; liquid nitrogen; instability; blade tip; triple point; head coefficient; インデューサ; キャビテーション流れ; 熱力学的特性; キャビティ長さ; キャビテーションサージ; サージモード振動; 入口温度; 渦; 液体窒素; 不安定性; 翼端; 3重点; 揚程係数
Document TypeTechnical Report
JAXA Category研究開発資料
ISSN1349-1121
SHI-NOAA0063226000
Report NoJAXA-RM-06-003
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/56418


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