2011 Fiscal Year Final Research Report
Suppression of Cavitation Instabilities in Inducer by Circumferential Groove
| Project/Area Number |
21360083
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Osaka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KAWATA Yutaka 大阪工業大学, 工学部, 教授 (70440930)
HORIGUCHI Hironori 大阪大学, 基礎工学研究科, 准教授 (60314837)
YONEZAWA Kouichi 大阪大学, 基礎工学研究科, 助教 (00362640)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 流体機械 / インデューサ / キャビテーション / ケーシングトリートメント / 周方向溝 / 動特性 |
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| Research Abstract |
A circumferential groove was adopted in the casing near the leading edge of the inducer to suppress cavitation instabilities in turbopump inducers for rocket engines. The circumferential groove could suppress the cavitation instabilities effectively. It was found that the cavitation instabilities with higher frequencies were generated by the interference of backflow vortex cavitation with the blades of the inducer. The dynamic characteristics of the inducer were estimated by computation and experiment.
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