A non-premixed rotating detonation engine using ethylene and air
A non-premixed rotating detonation engine using ethylene and air
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一种使用乙烯和空气的非预混旋转爆震发动机
DOI：
10.1016/j.applthermaleng.2018.04.015
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发表时间：
2018-06
影响因子：
6.4
通讯作者：
Zheng Yushan
中科院分区：
文献类型：
--
作者：
Wang Yuhui;Le Jialing;Wang Chao;Zheng Yushan
由于乙烯-空气快速混合困难，乙烯-空气旋转爆震发动机的研究较少。在乙烯-空气混合物中加入氢气或氧气，或者在以前的一些研究中使用预混的乙烯-空气混合物，以获得旋转爆轰波。实验获得了乙烯和空气在室温下的高速非预混旋转爆轰波，证明了乙烯作为吸气式旋转爆轰发动机的可行性。这里的中空燃烧器通道具有100 mm的外径。燃料和空气分别从150个直径为0.8 mm的圆柱形孔和喉部宽度为1 mm的圆形间隙喷入燃烧室。当空气流量为465-689 g/s和当量比为0.47-1.06时，爆速为1256-1653 m/s。大多数的速度都在Chapman-Jouguet值的80%以上。高速图像和动态压力传感器都显示在所有操作条件下都存在一个旋转爆震波。
Only a few studies on ethylene-air rotating detonation engines were conducted due to the great difficulty of quick ethylene-air mixing. Hydrogen or oxygen was added into ethylene-air mixtures, or premixed ethylene-air mixtures were used in some previous studies, to obtain rotating detonation waves. Non-premixed rotating detonation waves of high speeds for ethylene and air sources at room temperatures were obtained in the present study, proving ethylene is feasible for air-breathing rotating detonation engines. The hollow combustor channel here had an outer diameter of 100 mm. Fuel and air were injected into the combustor from 150 cylindrical orifices of a diameter 0.8 mm and a circular gap with a throat width of 1 mm, respectively. The detonation speeds were 1256–1653 m/s for the air flow rates 465–689 g/s and equivalence ratios 0.47–1.06. Most of the speeds were above 80% of Chapman-Jouguet values. Both high-speed images and dynamic pressure sensors showed there was one rotating detonation wave in all the operating conditions.
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