Propagation characteristics of rotating detonation with high-temperature hydrogen gas

• Published in: Journal of physics. Conference series Vol. 2478; no. 12; pp. 122027 - 122040
• Main Authors: Bai, Q D, Han, J X, Zhang, S J
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.06.2023
• Subjects: Auto-initiation; Detonation waves; High temperature; Hydrogen; Hydrogen-rich gas; Physics; Propagation; Propagation mode; Propagation modes; Propagation velocity; Rotating detonation wave; Rotation; Wave propagation
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/2478/12/122027

Abstract The rotating detonation characteristics of high-temperature hydrogen-rich gas were studied. Hydrogen-rich gas was generated by the pre-combustion of hydrogen, and a rotating detonation experiment of hydrogen-rich gas and air was subsequently performed. The auto-initiation of high-temperature hydrogen-rich gas was observed in the experiment, and the influence of pre-detonation tube ignition on the steady propagation of the detonation wave was analyzed. The results show that high-temperature hydrogen-rich gas and air have the ability to spontaneously form rotating detonation waves. The operation of the pre-detonation tube has a significant influence on the propagation mode and propagation velocity of the continuous rotating detonation wave after auto-initiation. The rotational detonation wave formed by the auto-initiation of hydrogen-rich gas and air has a short instability in the propagation process. The propagation velocity of the detonation wave before and after the unstable state is 1345.4 m/s and 1425.3 m/s, respectively, the unstable state is 1345.4 m/s and 1425.3 m/s, respectively.