| 气动阀式脉冲爆震发动机供油位置对爆震波峰值压力和频率的影响 |
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| 引用本文： | 郑殿峰,张会强,王家骅.气动阀式脉冲爆震发动机供油位置对爆震波峰值压力和频率的影响[J].航空动力学报,2009,24(2):313-317. |
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| 作者姓名： | 郑殿峰 张会强 王家骅 |
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| 作者单位： | 1.北京大学工学院, 北京 100871 |
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| 摘 要： | 在汽油和空气气动阀式脉冲爆震发动机(PDE)协调工作的基础上,研究了离心喷嘴在气动阀前方和后方供油时对爆震波峰值压力及PDE工作频率的影响.试验研究表明:在气动阀前方供油比在后方供油提高了爆震燃烧效果.建立了气动阀式PDE时序分析模型,在给定频率下预测的理论填充速度与实验观测结果相符.基于该模型的研究结果表明:在相同填充速度条件下,前、后方供油对PDE的工作频率影响不大,而缓燃-爆燃转捩(DDT)时间为2 ms的PDE,可以实现的工作频率约是DDT时间为3.8 ms的两倍.
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| 关 键 词： | 脉冲爆震发动机 气动阀 爆震波 供油方式 |
| 收稿时间： | 2007/12/22 0:00:00 |
| 修稿时间： | 2008/12/29 0:00:00 |
Effects of fuel-supply position on detonation waves and working frequency in an aero-valve pulse detonation engine |
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| ZHENG Dian-feng,ZHANG Hui-qiang and WANG Jia-hua.Effects of fuel-supply position on detonation waves and working frequency in an aero-valve pulse detonation engine[J].Journal of Aerospace Power,2009,24(2):313-317. |
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| Authors: | ZHENG Dian-feng ZHANG Hui-qiang and WANG Jia-hua |
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| Institution: | 1.College of Engineering, Peking University, Beijing 100871, China2.College of Aerospace, Tsinghua University, Beijing 100084, China3.College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, china |
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| Abstract: | Based on the coordinately working of aero-valve gasoline-air pulse detonation engine(PDE),the effects of fuel-supply position(before or after aero valves) on the pressure peaks of detonation wave and PDE's working frequency were investigated.Experimental results show that PDE can achieve higher pressure peak for fuel supplied before aero valves than that after aero valve.A time-series analysis model was established for aero-valve PDE,the predicted filling velocity under given working frequency agrees well w... |
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| Keywords: | pulsed detonation engine aero valve detonation wave fuel supply methods |
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