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
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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
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備考 | This is an Accepted Manuscript of an article published by American Institute of Aeronautics and Astronautics
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発行日 | 2013
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出版物タイトル |
Journal of Propulsion and Power
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巻 | 29巻
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号 | 3号
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出版者 | American Institute of Aeronautics and Astronautics
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開始ページ | 639
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終了ページ | 647
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ISSN | 0748-4658
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NCID | AA10459896
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資料タイプ |
学術雑誌論文
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言語 |
英語
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OAI-PMH Set |
岡山大学
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論文のバージョン | author
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DOI | |
Web of Science KeyUT | |
関連URL | isVersionOf https://doi.org/10.2514/1.B34524
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