Aerodynamic Analysis of Rotor Higher Harmonic Control Using a CFD Technique
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- KONDO Natsuki
- Japan Aerospace Exploration Agency
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- AOYAMA Takashi
- Japan Aerospace Exploration Agency
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- KOBIKI Noboru
- Japan Aerospace Exploration Agency
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- SAITO Shigeru
- Japan Aerospace Exploration Agency
抄録
This paper shows the results of aerodynamic and acoustic analysis of rotor higher harmonic control (HHC) using a CFD technique. HHC is one of the techniques for rotor blade-vortex interaction (BVI) noise reduction. A moving overlapped grid method is applied in the CFD code and three types of grid, inner and outer background grids, and blade grid are used to accurately simulate the blade-vortex interaction (BVI) phenomena. The calculated model is a single-blade rotor and the experimental data was obtained by the cooperative work between JAXA and Kawada Industry. In this calculation, the frequency of HHC is 20Hz (2/rev), and the amplitude is ±2.6°. 72° and 250° of control phase angles are chosen. These phases are selected for the weak BVI noise case and strong BVI noise case in the wind tunnel test, respectively. Our CFD code well captured the HHC effect on the blade surface pressure and acoustic waveform. However, the tendency of computed noise with respect to the control phase shows the reverse tendency compared with experimental results.
収録刊行物
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- Theoretical and Applied Mechanics Japan
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Theoretical and Applied Mechanics Japan 53 (0), 171-179, 2004
日本学術会議 「機械工学委員会・土木工学・建築学委員会合同IUTAM分科会」
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詳細情報 詳細情報について
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- CRID
- 1390001205209624576
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- NII論文ID
- 130004939025
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- ISSN
- 13494244
- 13480693
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可