Aeroengine Division, National Aerospace Laboratory(NAL)
Noise and Emission Research Group, National Aerospace Laboratory(NAL)
Aeroengine Division, National Aerospace Laboratory(NAL)
Noise and Emission Research Group, National Aerospace Laboratory(NAL)
TOSHIBA Corporation
出版者
航空宇宙技術研究所
出版者（英）
National Aerospace Laboratory(NAL)
雑誌名
航空宇宙技術研究所報告
雑誌名(英)
Technical Report of National Aerospace Laboratory TR-955
巻
955
ページ
15
発行年
1987-12
抄録（英）
Ensemble-averaged heat release rates and pressures inside the combustion chambers were measured to better understand the operating characteristics of a twin valveless pulse burner. The combustion flows were also visualized using a high-speed laser schlieren photography. A measurement system of OH chemiluminescence intensity and pressure transducers were used as diagnostic tools. Based on the well-known Rayleigh’s criterion, the effects on the combustion stabilities of varying the equivalence ratio and the mass flux are discussed. Results show that the phase difference between heat release rate and pressure contributes significantly to the pulse combustion stability. In addition, the phase difference does not depend on the mass flux but on the equivalence ratio, indicating that the fuel/air mixing is a determinant factor in the phase relationship. This mixing process was successfully visualized on the schlieren photographs.
Study on Twin Valveless Pulse Burner -Combustion stability and mixing patterns-
naltr00955.pdf
(1.53MB)
