摘要
为探索微小型脉冲爆轰发动机(Small-scale pulse detonation engine,SPDE)的工作特性,采用试验和数值模拟相结合的方式对SPDE进行了研究。设计了一台内径30 mm、总长900mm的火箭式气液两相SPDE。试验以汽油为燃料,研究了在不同点火频率下SPDE的工作情况。试验结果表明,SPDE能在1040 Hz频率下多循环稳定工作,爆轰波平均压力在23 MPa之间;随着频率的提高,峰值压力和平均压力均有所降低。数值计算采用二维守恒元/求解元方法(CE/SE)模拟了爆轰波在气液两相SPDE内的传播特性,计算结果与试验结果符合较好。研究结果对SPDE的雾化、掺混以及高频率的实现具有重要意义。
To explore the working characteristics of small-scale pulse detonation engine（SPDE）,a series of experiments and numerical simulations are carried out on SPDE.A gas-liquid small-scale pulse detonation rocket engine is designed with 30 mm inner diameter and a total length of 900 mm.The characteristics of pressure wave in detonation tube at different ignition frequencies are studied by using gasoline as fuel.Multi-cycle detonation experiments show that SPDE can work stably and continuously under the frequency range of 1040 Hz,and the average pressure of detonation wave is between 23 MPa; with the increase of frequency,the peak pressure and the average pressure are reduced.Two-dimensional CE/SE method is used to simulate the propagation characteristics of detona-tion wave in gas-liquid two-phase SPDE,and the calculation results are in good agreement with the experimental results.The research results are significant to the study of SPDE atomization,mixing and the realization of high frequency SPDE.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2017年第1期1-5,共5页
Journal of Nanjing University of Science and Technology
基金
国家自然科学基金(11472138)
关键词
微小型脉冲爆轰发动机
气液两相
多循环试验
数值模拟
small-scale pulse detonation engine
gas-liquid two-phase
multi-cycle detonation experiment
numerical simulation
