|关键词: 旋转爆震波 两相混气 传播速度 低速爆震 实验研究
|Experimental study on propagation characteristics of rotary detonation wave in circular chamber with two-phase mixture
JIA Bingyue1,2, ZHANG Yining2, MENG Hao2, PAN Hu2, HONG Yanji1
1.State Key Laboratory of Laser Propulsion & Application,University of Space Engineering,Beijing 101416,China;2.Beijing Power Machinery Institute,Beijing 100074,China
|To research the effects of chamber structure and incoming condition on the propagation characteristics of the rotary detonation wave with liquid hydrocarbon/pure air mixture， an experimental study has been made on a circular rotary detonation chamber. Factors like the incoming total temperature， the chamber exit chocking ratio and the equivalence ratio have been considered in the experiments. The frequency of rotary detonation combustion and the frequency of tangential thermo-acoustic combustion have been calculated and analyzed in a circular chamber under typical operations. The experimental results show that the rotary detonation waves tend to be stabilized with the decrease of the chamber exit chocking ratio， the rotary detonation wave propagation velocity increases with the rise of the incoming flow total temperature and the equivalent ratio. A low-speed detonation wave with a propagation velocity significantly lower than the C-J theoretical value is obtained in the two-phase mixture.
|Key words: Rotary detonation wave Two-phase mixture Propagation velocity Low-speed detonation Experimental study