论文部分内容阅读
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.
The hydrogen / air continuous rotary detonation test was carried out, and the instantaneous propagation frequency and propagation velocity of continuous rotary detonation wave were calculated. The relative standard deviation was calculated and used as the evaluation criterion for the stability of instantaneous propagation of detonation wave. The results show that when the equivalence ratio is 1.0, the air flow rate increases from 321g / s to 505g / s, the average propagation frequency of continuous rotary detonation wave increases from 4.60kHz to 5.33kHz, the average The propagation velocity increased from 1 445m / s to 1 674m / s. The relative standard deviation of the instantaneous propagation frequency of the continuous rotary detonation wave decreased from 4.00% to 1.69%, indicating that the continuous rotary detonation wave with larger propellant flow rate Communication process more stable.