自激振荡脉冲射流喷嘴的理论分析

Theory of the Self-excited Oscillation Pulsed Jet Nozzle

由作者发明和研制成功的自激振荡脉冲喷嘴在相同条件下与常规的连续射流相比 ,射流的峰值压力 ,冲蚀体积和射流的有效靶距均得到明显的提高 ,文中简要地对作者发明和研制的自激振荡脉冲喷嘴的基本理论 (剪切流动的稳定性、扰动波的有效反馈条件、振荡腔内剪切层的漩涡结构及在变换平面λP 中点涡的复速度势的计算等 )

Under the same condition the self-excited oscillation pulsed jet has a higher peak of pressure and larger volume of erosion in comparison with general continuous jet the self_excited oscillation pulsed jet increases the effective distance off of the jet. The basic theory of the Self_excited oscillation pulsed jet nozzle which propose by author, shch as the stability for shearing flow, effective feedback of the disturbance wave, the vortex structure of shearing layer in the conversion plane λ P , the calculation of complex velocity potential for point vortex etc., is introduced.