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Jet mixing noise suppression by means of a claw mixer: Revision of the nail configuration to improve the high-frequency acoustic property
https://jaxa.repo.nii.ac.jp/records/22610
https://jaxa.repo.nii.ac.jp/records/22610bea2385e-f202-4320-9ea8-47caf00ecf48
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2015-07-07 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Jet mixing noise suppression by means of a claw mixer: Revision of the nail configuration to improve the high-frequency acoustic property | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Jet mixing noise | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Claw mixer | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Nail | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Large eddy simulation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Scale-model test | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Flow control | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Jet engine | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
石井, 達哉
× 石井, 達哉× 榎本, 俊治× 中村, 聡× 石川, 仁× Ishii, Tatsuya× Enomoto, Shunji× Nakamura, Satoru× Ishikawa, Hitoshi |
|||||
著者所属 | ||||||
宇宙航空研究開発機構航空本部(JAXA) | ||||||
著者所属 | ||||||
宇宙航空研究開発機構航空本部(JAXA) | ||||||
著者所属 | ||||||
東京理科大学 | ||||||
著者所属 | ||||||
東京理科大学 | ||||||
著者所属(英) | ||||||
en | ||||||
Institute of Aeronautical Technology, Japan Aerospace Exploration Agency (JAXA) | ||||||
著者所属(英) | ||||||
en | ||||||
Institute of Aeronautical Technology, Japan Aerospace Exploration Agency (JAXA) | ||||||
著者所属(英) | ||||||
en | ||||||
Tokyo University of Science | ||||||
著者所属(英) | ||||||
en | ||||||
Tokyo University of Science | ||||||
出版者 | ||||||
出版者 | 日本機械学会 | |||||
出版者(英) | ||||||
出版者 | The Japan Society of Mechanical Engineers | |||||
書誌情報 |
en : Journal of Fluid Science and Technology 巻 9, 号 3, p. JFST0044, 発行日 2014-09-30 |
|||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Jet powered aircraft radiate a substantial amount of noise around airports. Among several noise sources of the aircraft, high-speed jet behind the nozzles of jet engines generates strong sound through mixing process of jet with the surrounding flow. One of the effective measures against the jet mixing noise is to control the flow field so as to weaken shear in the jet plume. The authors have proposed a claw mixer as a retractable mixing control device. The claw, composed of half-edged nails, is placed at the nozzle end. In the preliminary noise test using a jet engine, the nails with a configuration of 60 deg inclination relative to jet and a 30% penetration provided sufficient noise reduction in the downstream of jet. However, this configuration of nails resulted in increase of additional noise at higher frequencies. To improve this acoustic property, this study attempted to redesign the nail configurations with a help of large eddy simulation. The revised nail configurations, e.g., shallower inclination and less penetration of the nails, suggested less turbulent kinetic energy at higher frequency and thus less additional noise increase to the lateral of jet. The subsequent scale-model test on the revised claw mixer confirmed suppression in both broadband peak noise and the higher-frequency noise. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1880-5558 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://dx.doi.org/10.1299/jfst.2014jfst0044 | |||||
関連名称 | info:doi/10.1299/jfst.2014jfst0044 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: PA1520023000 |