Effects of a turbine guide vane on hydrogen-air rotating detonation wave propagation characteristics

Effects of a turbine guide vane on hydrogen-air rotating detonation wave propagation characteristics
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涡轮导叶对氢-空气旋转爆震波传播特性的影响

DOI:
10.1016/j.ijhydene.2017.06.115
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发表时间:
2017-08
影响因子:
7.2
通讯作者:
Zhou Changsheng
Zhou Changsheng
中科院分区:
工程技术2区
文献类型:
--
作者:
Zhou Shengbing;Ma Hu;Li Shuai;Liu Daokun;Yan Yu;Zhou Changsheng

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旋转爆震发动机是一种利用连续旋转爆震波产生推力的新型发动机。本文采用旋转爆震燃烧室和涡轮机导流叶片组合结构,对氢-空气爆震波的传播特性进行了实验研究。结果表明,随着当量比的增大,爆轰波传播速度先增大后减小,最大传播速度为Chapman-Jouguet值的84%。与无导叶试验相比,爆震波速度普遍提高了4.31%,但稳态工作范围变窄。通过导叶后,振荡压力降低了64%,导叶出口处的压力值仅为0.4 bar。同时,部分激波被反射回燃烧室,产生微小的压力扰动,反射波的传播方式与RDW的传播方向有关。
The rotating detonation engine is a new machine that can generate thrust via continuous rotating detonation waves (RDWs). In this study, experiments were performed on a structure combining a rotating detonation combustor (RDC) and a turbine guide vane to investigate the propagation characteristic of hydrogen-air RDW. The results showed that the velocity of detonation wave initially increased and then decreased with the increase of equivalence ratio, and it got a velocity of 84% Chapman-Jouguet value. The velocity of detonation wave generally rose by 4.31% comparing with the no guide vane tests, while the scope of steady-operation state became narrow. The oscillation pressure was reduced by 64% after passing through the guide vane, and the magnitude of pressure was only 0.4 bar at the guide vane exit. Meanwhile, part of the shock wave was reflected back to combustor resulting in some small pressure disturbances, and the propagation mode of reflected wave was related to the propagation direction of RDW.
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发表时间: 2016-03
影响因子: 7.2
作者:
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发表时间: 2013-12
期刊: Defence Technology
影响因子: 5.1
作者:
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