乙烯富燃燃气旋转爆轰波传播特性实验研究
Experimental study on propagation characteristics of rotating detonation wave of ethylene-rich gas
刘嘱勇 1白桥栋 1韩家祥 1邱晗 1李航 1翁春生1
作者信息
- 1. 南京理工大学 瞬态物理国家重点实验室,江苏 南京 210094
- 折叠
摘要
本文以乙烯与氧气燃烧产生的富燃燃气作为燃料,空气为氧化剂,开展了乙烯富燃燃气旋转爆轰波传播特性实验研究.探究了不同传播模态下旋转爆轰波传播特性以及传播模态的影响因素,对不同模态下的时频特性、传播速度及起爆延迟时间等参数进行了对比分析.研究表明:乙烯富燃燃气传播模态及工作当量比区间与一次燃烧产物有关.在单波模态中,当量比为0.67时,获得爆轰波最大传播速度为1 347.4 m/s.空气质量流量增加,乙烯富燃燃气旋转爆轰波传播模态向多波模态发展,爆轰波波头数目增加会导致爆轰波传播速度下降.同种传播模态下,起爆延迟时间随着空气流量增加而缩短.
Abstract
Using the fuel-rich gas produced by the combustion of ethylene and oxygen as fuel and air as the oxidant,the experimental research on the propagation characteristics of rotating detonation wave of ethylene-rich combustion gas was carried out.The propagation characteristics of rotating detonation wave and the influencing factors of propagation modes under different propagation modes were explored,and the time-frequency character-istics,propagation speed and initiation delay time under different modes were comparatively analyzed.The re-sults show that the propagation mode of the rotating detonation wave of ethylene-rich combustion gas and the working equivalence ratio interval are related to the primary combustion products.In the single-wave mode and the equivalence ratio of 0.67,the maximum propagation velocity of the detonation wave is 1 347.4 m/s.As air mass flow rate increases,propagation mode of ethylene-enriched gas rotating detonation wave develops into multi-wave mode.An increase in the number of detonation wave-heads will lead to a decrease in the propagation velocity of the detonation wave.The initiation delay time decreases with increasing air flow in the same propaga-tion mode.
关键词
旋转爆轰发动机/乙烯富燃燃气/当量比/起爆延迟时间/传播模态/预燃室Key words
Rotating detonation engine/Ethylene-rich combustion gas/Equivalence ratio/Initiation de-lay time/Propagation mode/Pre-combustion chamber引用本文复制引用
出版年
2025
NETL
NSTL
万方数据