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Other TitleOn the reduction of rotor-stator interaction by using inverse design in turbopump
Author(jpn)吉田 義樹; 渡辺 啓悦
Author(eng)Yoshida, Yoshiki; Watanabe, Hiroyoshi
Author Affiliation(jpn)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; 荏原総合研究所
Author Affiliation(eng)Japan Aerospace Exploration Agency Space Transportation Propulsion Research and Development Center, Space Transportation Mission Directorate; Ebara Research Co. Ltd.
Issue Date2008-08-29
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication date2008-08-29
AbstractInvestigation on the reduction of rotor-stator interaction in turbopump impeller/diffuser by using inverse design was presented. To reduce the rotor-stator interaction, modified impeller and diffuser were designed by 3D inverse design method. The unsteady pressure fluctuations in the impeller and diffuser were evaluated by unsteady CFD (Computational Fluid Dynamics) technique. The results of CFD show the rotating pressure pattern, and also the mechanism of the interaction between the impeller outlet and the diffuser inlet. The modified stage consisted of the impeller with staking and the diffuser with inlet sweep have the effect to reduce the rotor-stator interaction caused by lengthening the blade passing time. The pressure fluctuations of modified impeller/diffuser system decreases 20-30 percent less than those of original impeller/diffuser system without the staking and the inlet sweep.
DescriptionJAXA Research and Development Memorandum
Keywordsturbopump; rotor stator interaction; inverse design; pump impeller; vaned diffuser; centrifugal pump; impeller blade; unsteady flow; pressure distribution; computational fluid dynamics; structural design; ターボポンプ; 動静翼干渉; 逆解法設計; ポンプインペラ; ベーンドディフューザ; 遠心ポンプ; 羽根車翼; 非定常流; 圧力分布; 計算流体力学; 構造設計
Document TypeTechnical Report
JAXA Category研究開発資料
Report NoJAXA-RM-08-003

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