Numerical simulation of shock wave imploding detonation initiation in two-stage pulse detonation engine
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摘要: 通过数值模拟手段,针对两级脉冲爆震发动机(PDE)激波聚焦点火起爆及周期性脉冲爆震进行了详细计算.结果表明:激波汇聚会在发动机内产生两个高温高压区域,且后者压力温度远高于前者,为点火关键.针对起爆失败的工况,提高温度、压力、马赫数3个条件中的任何一个都能成功起爆.通过全场周期性脉冲计算得知,保证成功点火起爆的前提下仍需要调整合适的参数才能维持稳定的周期性脉冲,发动机在入口温度600K,马赫数为2.0,压力为150kPa工况时能够产生稳定的周期性脉冲爆震,频率在300Hz附近.
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关键词:
- 激波聚焦 /
- 两级脉冲爆震发动机(PDE) /
- 点火 /
- 爆震燃烧 /
- 瞬态模拟技术
Abstract: Ignition method and periodic pulse in two-stage pulse detonation engine(PDE) were computed by numerical simulation. Results showed that two zones with high temperature and high pressure were engendered by shock wave imploding in engine. Temperature and pressure of the second zone became much higher than the first one, which was the key point of ignition. Depending on temperature, pressure or Mach number improvement, detonation appeared in the unfired condition. With precondition of successful ignition, modulating was still necessary to get appropriate inlet condition which can keep periodic pulse. Periodic pulse with frequency of 300Hz appeared by the inlet temperature of 600 K, Mach number of 2.0 and pressure of 150kPa. -
[1] Kentfeld J A C.Fundamentals of idealized airbreathing pulse-detonation engines[J].Journal of Propulsion and Power,2002,18(1):77-83. [2] Kentfeld J A C.Thermodynamics of airbreathing pulse-detonation engines[J].Journal of Propulsion and Power,2002,18(6):1170-1175. [3] 严传俊,范玮.脉冲爆震发动机原理及关键技术[M].西安:西北工业大学出版社,2005. [4] Kailasanath K.Recent developments in the research on pulse detonation engines[J].AIAA Journal,2003,41(2):145-159. [5] 李牧.多循环爆震起爆研究[D].西安:西北工业大学,2007.LI Mu.Multi-cycle detonation initiation[D].Xian:Northwestern Polytechnical University,2007.(in Chinese) [6] Nicholls J,Wilkinson H,Morrison R.Intermittent detonation as a thrust producing mechanism[J].Jet Propulsion,1957,27(5):534-541. [7] Fickett W,Davis W C.Detonation theory and experiment [M].New York:Dover Publications,2000. [8] Zeldovich Y B.On the theory of the propagation of detonation in gaseous systems[J].Journal of Experimental and Theoretical Physics,1940,10:542-568. [9] Bull D C,McLeod M A,Mizner G A.Detonation of unconfined fuel aerosols[J].Progress in Astronautics and Aeronautics,1981,75:48-60. [10] Kailasanath K.Liquid-fueled detonation in tubes[J].Journal of Propulsion and Power,2006,22(6):1261-1268. [11] 郑龙席,卢杰,彭畅新,等.吸气式无阀脉冲爆震发动机DDT过程数值模拟[J].西北工业大学学报,2014,32(5):713-717.ZHENG Longxi,LU Jie,PENG Changxin,et al.Numerical investigation of DDT (deflagration to detonation transition) process in a valveless air-breathing pulse detonation engine[J].Journal of Northwestern Polytechnical University,2014,32(5):713-717.(in Chinese) [12] 王治武,陈星谷,郑龙席,等.不同类型射流起爆爆震波特性的数值研究[J].西北工业大学学报,2014,32(4):618-622.WANG Zhiwu,CHEN Xinggu,ZHENG Longxi,et al.Numerical research of the different types of jet effect on detonation initiation characteristics[J].Journal of Northwestern Polytechnical University,2014,32(4):618-622.(in Chinese) [13] 杨青,李志强,邸亚超,等.激波聚焦诱导气液两相爆震燃烧的数值模拟[J].航空动力学报,2014,29(8):1802-1809.YANG Qing,LI Zhiqiang,DI Yachao,et al.Numerical simulation on gas-liquid two-phase detonation combustion induced by shock wave focusing[J].Journal of Aerospace Power,2014,29(8):1802-1809.(in Chinese) [14] 邱华,龚婷婷,熊姹,等.带二次流增推尾喷管的脉冲爆震发动机数值模拟研究[J].西北工业大学学报,2015,33(2):271-276.QIU Hua,GONG Tingting,XIONG Cha,et al.Numerical simulation of pulse detonation engine (PDE)with fluidic nozzle[J].Journal of Northwestern Polytechnical University,2015,33(2):271-276.(in Chinese) [15] 何惠琴,翟志刚,司廷,等.偏心对汇聚激波诱导的RM不稳定性影响的数值研究[J].计算物理,2016,33(1):66-74.HE Huiqin,ZHAI Zhigang,SI Ting,et al.Numerical investigation on eccentricity effect in richtmyer-meshkov instability induced by converging shock wave[J].Chinese Journal of Computational Physcis,2016,33(1):66-74.(in Chinese) [16] 严宇,杨岸龙,范玮,等.脉冲爆震发动机部分填充效应理论分析[J].推进技术,2015,36(9):1361-1367.YAN Yu,YANG Anlong,FAN Wei,et al.Theoretical analysis of partial-filling effect of pulse detonation engine[J].Journal of Propulsion Technology,2015,36(9):1361-1367.(in Chinese) [17] 陈鑫,朱晓彬,何立明,等.激波聚焦起爆脉冲爆震发动机性能分析[J].弹箭与制导学报,2015,35(3):89-92.CHEN Xin,ZHU Xiaobin,HE Liming,et al.Performance analysis of shockwave focus pulse detonation engine[J].Journal of Projectiles,Rockets,Missiles and Guidance,2015,35(3):89-92.(in Chinese) [18] 母云涛,王玉清,李立翰,等.脉冲爆震发动机点火过程离子催化效应数值模拟[J].航空动力学报,2015,30(3):694-700.MU Yuntao,WANG Yuqing,LI Lihan,et al.Numerical simulation for ion catalytic effect in ignition process of pulse detonation engine[J].Journal of Aerospace Power,2015,30(3):694-700.(in Chinese)
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