このエントリーをはてなブックマークに追加
ID 56130
フルテキストURL
著者
Kouchi, Toshinori Graduate School of Natural Science and Technology
Masuya, Goro Tohoku University
Hirano, Kohshi Keio University
Matsuo, Akiko Keio University
抄録
We developed a stinger-shaped injector (stinger injector) for supersonic combustors in cold-flow experiments. The stinger injector has a port geometry with a sharp leading edge in front of a streamwise slit. This injector produced higher jet penetration at a lower jet-tocrossflow momentum flux ratio (J) than a conventional circular injector. We applied the injector in a Mach 2.44 combustion test at a stagnation temperature of 2060 K. At a low fuel equivalence ratio (Φ) regime (i.e., low J regime), the injector produced 10% higher pressure thrust than the circular injector because of high jet penetration as expected from the coldflow experiments. Even at a moderate Φ regime, the stinger injector produced higher pressure thrust than the circular injector. At moderate Φ, the stinger injector held the flame around the injector and generated a precombustion shock wave in front of the injector. The presence of the precombustion shock wave decreased the momentum flux of the crossflow air and diminished the advantage of the injector for jet penetration. The injector, however, produced higher pressure thrust because better flame-holding produced higher pressure around the injector. At a higher Φ regime, the precombustion shock wave went upstream with both injectors. The far-upstream presence of a precombustion shock wave increased the turbulence in the crossflow and spread the fuel from both injectors. Thus, the difference in injector shape was insignificant for thrust performance
備考
This is an Accepted Manuscript of an article published by American Institute of Aeronautics and Astronautics
発行日
2013
出版物タイトル
Journal of Propulsion and Power
29巻
3号
出版者
American Institute of Aeronautics and Astronautics
開始ページ
639
終了ページ
647
ISSN
0748-4658
NCID
AA10459896
資料タイプ
学術雑誌論文
言語
English
OAI-PMH Set
岡山大学
論文のバージョン
author
DOI
Web of Sience KeyUT
関連URL
isVersionOf https://doi.org/10.2514/1.B34524