三维爆震引射增推性能数值计算及验证

本文对三维圆形爆震室引射增推性能进行了数值模拟和试验验证。应用数值方法对爆震波衰退为激波后的传播、排除过程进行了多循环模拟,分析了三维爆震波非稳态引射流场的变化过程,得到了与文献一致的结果；对多循环爆震引射过程的瞬时推力、冲量以及爆震室出口的质量流量进行了分析研究；引射喷管在不同位置处时对爆震室的推力增量值进行了对比,发现在引射喷管轴向位置X=0mm处时推力增量达到最大值,试验验证了这一结论。

Numerical simulation and experimental study on thrust augmentation of 3D pulse detonation engine ejector systems

Numerical simulation and experimental study on thrust augmentation of 3D round pulse detonation engine ejector systems were carried out. The details of detonation wave broke up to shock wave were simulated. The development and performance of three-dimensional round detonative chamber ejection were analyzed, which were close to the results of reference. The instantaneous thrust, impulse and mass flow rate of multiple-cycle detonation ejection were researched. Thrust augmentations of pulse detonative chamber ejection systems at different axial location were contrastively studied, and found that the maximum thrust augmentation was obtained at the axial location X=0mm in the ejector system driven, which was verified by experimental study.