元素势法在爆震波特征参数计算中的应用

Element potential approach and its application to calculation of characteristic parameters of detonation wave

关键词:  脉动式喷气发动机  元素势法  爆轰波  特征参数计算

Key words:  Pulsejet engine  Element potential approach  Detonation wave  Calculation of characteristic parameters

摘要:

应用元素势法 ,计算了脉冲爆震发动机 (PDE)常用的 6种爆震燃料产生爆震波的波后压力、波后温度及爆震波速等特征参数 ,得出了特征参数随余气系数变化的合理规律 ,以及PDE应选择密度大的燃料的结论。并与实验结果和国外相应的计算结果进行了对比 ,说明了该法在PDE研究中的有效性和可靠性。

Abstract:

Using element potential approach, the characteristic parameters such as post-detonation pressure, post-detonation temperature and detonation wave velocity of pulse detonation engines with 6 conventional detonable fuels were calculated and reasonable variations of these parameters with excess air coefficient were obtained. Moreover, the conclusion was drawn that the higher fuel density was, the better the performance of PDE. Compared with our experimental results and those of corresponding calculation abroad, it is shown that the element potential approach is highly efficient and reliable in PDE research.