摘要
开展氢气/空气连续旋转爆震试验,并计算连续旋转爆震波的瞬时传播频率与传播速度,统计其相对标准偏差,并以此作为爆震波瞬时传播过程稳定性的评价标准,研究推进剂流量对连续旋转爆震波瞬时传播特性的影响.结果表明:在当量比为1.0时,空气流量由321g/s增加至505g/s,连续旋转爆震波的平均传播频率由4.60kHz升高至5.33kHz,平均传播速度由1 445m/s增加为1 674m/s;连续旋转爆震波瞬时传播频率的相对标准偏差则由4.00%减小至1.69%,这表明连续旋转爆震波在较大的推进剂流量下的传播过程更加稳定.
Experiments on continuous rotating detonation were performed using hydro- gen/air. The instantaneous propagation frequency and velocity of the continuous rotating detonation wave （CRDW） were analyzed, and the relative standard deviation was obtained to describe the stability of detonation wave instantaneous propagation process. The effect of propellant mass flow rate on the CRDW instantaneous propagation characteristics was stud- ied. The results showed that when the mass flow rate of air increased from 321g/s to 505g/s with the equivalence ratio of 1.0, the average propagation frequency of CRDW rose from 4.60 kHz to 5.33 kHz, and the average propagation velocity increased from 1445 m/s to 1674 m/s. Correspondingly, the relative standard deviation of instantaneous propagation frequen- cy of CRDW decreased from 4. 00% to 1.69%, indicating a more stable propagation process of CRDW at a higher propellant mass flow rate.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2015年第11期2600-2606,共7页
Journal of Aerospace Power
基金
国家自然科学基金(51306202
91216120)
关键词
连续旋转爆震
瞬时传播特性
相对标准偏差
传播稳定性
爆震推进
continuous rotating detonation
instantaneous propagation characteristics
relative standard deviation
propagation stability
detonation propulsion
