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Combined effect of spatial and temporal variations of equivalence ratio on combustion instability in a low-swirl combustor
https://jaxa.repo.nii.ac.jp/records/22609
https://jaxa.repo.nii.ac.jp/records/22609b7b22c7a-7d24-49f0-acba-bfc41cf6099c
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 | Combined effect of spatial and temporal variations of equivalence ratio on combustion instability in a low-swirl combustor | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Combustion instability | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Low-swirl | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Lean premixed combustion | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Inhomogeneous mixture flame | |||||
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 |
立花, 繁
× 立花, 繁× 金井, 洸太× 吉田, 征二× 鈴木, 和雄× 佐藤, 哲也× Tachibana, Shigeru× Kanai, Kota× Yoshida, Seiji× Suzuki, Kazuo× Sato, Tetsuya |
|||||
著者所属 | ||||||
宇宙航空研究開発機構航空本部(JAXA) | ||||||
著者所属 | ||||||
早稲田大学 | ||||||
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 | ||||||
早稲田大学 | ||||||
著者所属(英) | ||||||
en | ||||||
Institute of Aeronautical Technology, Japan Aerospace Exploration Agency (JAXA) | ||||||
著者所属(英) | ||||||
en | ||||||
Waseda University | ||||||
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 | ||||||
Waseda University | ||||||
出版者(英) | ||||||
出版者 | Elsevier | |||||
書誌情報 |
en : Proceedings of the Combustion Institute 巻 35, 号 3, p. 3299-3308, 発行日 2015 |
|||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | In this experimental study, the combined effect of spatial and temporal variations of fuel-air mixture on self-excited combustion instabilities in a gas-turbine model combustor (approximately 60 kW) with a low-swirl injector is reported. Detailed measurements were performed in 4 fuel split (to upstream/downstream injections) conditions while keeping the total equivalence ratio constant. The combustion stability was found to be very sensitive to the fuel split parameter which determined the local equivalence ratio distribution. The majority of the heat-release oscillations was generated in the flame-to-wall impingement region in a manner that satisfied the Rayleigh criterion. The driving force of the instability was considered the periodic interaction between the traveling vortex filled with fresh mixtures and the flame in the near-wall region as reported in the previous study on homogeneous mixture flame. However, the strength of the instability was sensitively modified by the change in the local equivalence ratio distribution. In the strongest oscillation case with inhomogeneous mixture, temporal variations of equivalence ratio exhibited a positive contribution to the thermoacoustic coupling. This suggested that temporal variations in equivalence ratio were enhancing the driving factor of the thermoacoustic instability in addition to the vortex-flame interaction mechanism. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1540-7489 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11552208 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://dx.doi.org/10.1016/j.proci.2014.07.024 | |||||
関連名称 | info:doi/10.1016/j.proci.2014.07.024 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: PA1520022000 |