南京理工大学 瞬态物理全国重点实验室,江苏 南京 210094
邮箱:baiqdnj@njust.edu.cn
收稿:2025-12-11,
网络首发:2026-07-23,
纸质出版:2026-07-31
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陈家文,白桥栋,韩家祥等.出口阻塞比对CH4/CO/H2混合气自起爆旋转爆轰波传播特性的影响[J].兵工学报,2026,47(07):29-39. DOI: 10.12382/bgxb.2025.1089.
CHEN Jiawen,BAI Qiaodong,HAN Jiaxiang,et al.The Influence of Outlet Blockage Ratio on the Propagation Characteristics of Auto-Initiated Rotating Detonation Waves in CH4/CO/H2 Gas Mixtures[J].ACTA ARMAMENTARII,2026,47(07):29-39. DOI: 10.12382/bgxb.2025.1089.
陈家文,白桥栋,韩家祥等.出口阻塞比对CH4/CO/H2混合气自起爆旋转爆轰波传播特性的影响[J].兵工学报,2026,47(07):29-39. DOI: 10.12382/bgxb.2025.1089. DOI:
CHEN Jiawen,BAI Qiaodong,HAN Jiaxiang,et al.The Influence of Outlet Blockage Ratio on the Propagation Characteristics of Auto-Initiated Rotating Detonation Waves in CH4/CO/H2 Gas Mixtures[J].ACTA ARMAMENTARII,2026,47(07):29-39. DOI: 10.12382/bgxb.2025.1089. DOI:
为研究出口阻塞比对CH
4
/CO/H
2
混合气自起爆旋转爆轰波传播特性的影响,在固定来流条件下,通过改变旋转爆轰燃烧室的出口宽度,系统分析了起爆方式、爆轰波传播特性及稳定性随出口阻塞比的变化规律。实验结果表明,出口阻塞比的改变对传播模态和起爆方式造成了显著影响;随着出口阻塞比的增加,旋转爆轰波呈现出3种典型的传播模态:双波对撞模态、四波对撞模态与三波同向模态;对于起爆方式,在低阻塞比条件下,混合气可与空气实现直接自起爆,而在阻塞比大于等于0.55的条件下,则需通过掺氧方式实现诱导起爆,掺氧条件下起爆延迟时间显著缩短且稳定工作边界明显拓宽。
The influence of the outlet blockage ratio on the propagation characteristics of self-initiating rotating detonation waves in CH
4
/CO/H
2
gas mixtures is investigated.The variation laws of the initiation mode, propagation characteristics and stability of detonation wave with the outlet blockage ratio under fixed inflow conditions are systematically analyzed by changing the outlet width of the rotating detonation combustor. Experimental results show that the variation in the outlet blockage ratio significantly affects the propagation mode and initiation mode. As the outlet blockage ratio increases, the rotating detonation wave exhibits three typical propagation modes: two-wave collision mode, fou
r-wave collision mode, and three-wave co-directional mode. For the initiation method, the mixture can achieve direct auto-initiation with air under low blockage ratio conditions. However, an oxygen mixing is required to achieve induced initiation when the blockage ratio is greater than 0.55. Under oxygen mixing conditions, the initiation delay time is significantly shortened, and the stable operating range is substantially widened.
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