Effect of combustor configurations on propagation characteristics of rotating detonation waves

ZHAO Minghao; WANG Ke; WANG Zhicheng; ZHU Yiyuan; LI Qing'an; FAN Wei

doi:10.7527/S1000-6893.2021.25372

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2022 , Vol. 43 >Issue 5: 125372 - 125372

DOI: https://doi.org/10.7527/S1000-6893.2021.25372

Fluid Mechanics and Flight Mechanics

Effect of combustor configurations on propagation characteristics of rotating detonation waves

ZHAO Minghao ,
WANG Ke ,
WANG Zhicheng ,
ZHU Yiyuan ,
LI Qing'an ,
FAN Wei

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1. School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, China;
2. Shaanxi Key Laboratory of Thermal Sciences in Aeroengine System, Northwestern Polytechnical University, Xi'an 710129, China

Received date: 2021-02-04

Revised date: 2021-02-24

Online published: 2021-04-27

Supported by

National Natural Science Foundation of China (52076181, 52176133); Natural Science Basic Research Program of Shaanxi (2020JQ-185); the Fundamental Research Funds for the Central Universities (3102019ZX024); Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University (CX2021072)

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Abstract

To analyze the propagation characteristics of the rotating detonation waves in different combustors, five combustors with different structural parameters were adopted, including one hollow chamber, two kinds of annular chambers, and two kinds of cavity chambers. Experiments were conducted in different combustors under the same supplying condition utilizing ethylene and oxygen-enriched air. The fuel and oxidizer were injected separately through a slot-orifice injection structure. The characteristics of the rotating detonation wave and propulsive performance are discussed. In the hollow chamber, the rotating detonation wave propagates steadily in the stable detonation mode with a wider range of equivalence ratio, while the propulsive performance is the lowest. In the cavity chambers, the operating range of the stable detonation mode is between the two annular chambers with chamber widths of 19 mm and 15 mm, but the propulsive performance is slightly higher than that of the annular chamber with a width of 19 mm. In addition, the operating range based on the cavity chambers increases with the increase of the cavity length.

Key words： combustor configurations; propagation characteristics; operating range; propulsive performance; rotating detonation

Cite this article

ZHAO Minghao , WANG Ke , WANG Zhicheng , ZHU Yiyuan , LI Qing'an , FAN Wei . Effect of combustor configurations on propagation characteristics of rotating detonation waves[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022 , 43(5) : 125372 -125372 . DOI: 10.7527/S1000-6893.2021.25372

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