| 旋转爆震燃烧室与涡轮导向器组合实验研究 |
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| 作者姓名： | 周胜兵 马虎 李帅 周长省 |
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| 作者单位： | 南京理工大学机械工程学院，江苏南京 210094 |
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| 基金项目： | 国家自然科学基金51606100 |
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| 摘 要： | 旋转爆震涡轮发动机正获得广泛的关注，但旋转爆震燃烧室出口存在着高频的压力波动，压力波动会降低涡轮的工作效率并减小涡轮的工作寿命.基于旋转爆震波的传播特点，开展了旋转爆震燃烧室与涡轮导向器组合结构的实验研究.燃料为H2，由位于燃烧室前端的120个小孔喷入燃烧室；氧化剂为空气，由径向环缝喷入燃烧室.在燃烧室内起爆旋转爆震波后，爆震产物直接流入导向器内.研究结果表明，随当量比的增加，燃烧室内爆震波的传播速度呈先增大后减小的趋势.在导向器出口仍存在与燃烧室内旋转爆震波同主频的振荡压力，但相对于导向器前的振荡压力，出口压力振幅减小了约64%.旋转爆震波传播速度的相对偏差先减小后增大，并且爆震波传播越稳定，其速度损失越小.
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| 关 键 词： | 旋转爆震燃烧室 涡轮导向器 旋转爆震波 振荡压力 稳定性 |
| 收稿时间： | 2017-09-07 |
Combinatorial Experiment Research on Rotating Detonation Combustor and Turbine Guide Vane |
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| Affiliation: | School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
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| Abstract: | The research on rotating detonation turbine engine (RDTE) is attracting much attention in recent years, but the high-frequency pressure oscillation always exists at the rotating detonation combustor (RDC) exit, which could reduce the operation efficiency and the working life of turbine. Experiments were performed on a structure combining RDC and turbine guide vane based on the propagation characteristic of rotating detonation wave (RDW). Hydrogen, which was used as fuel, was injected into chamber through 120 orifices uniformly distributed in front of combustor, and air, which was functioned as an oxidiser, was injected into combustion chamber through a radial annular slot. The product of detonation directly flowed into guide vane after the detonation wave being initiated in the combustor. Results show that the velocity of detonation wave initially increases and then decreases with the increase of equivalence ratio. There is oscillation pressure at the exit of guide vane, which has the same oscillation frequency with detonation wave in combustor, and the oscillation pressure is reduced by 64% after passing through the guide vane. The relative standard deviation of RDW propagation velocity initially decreases and then increases, and the loss of velocity will be small when the detonation wave propagates stably. |
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