【摘要】 论述了它激剪切流动诱发振荡射流的机理 ,分析了它激有效激励条件 ,并对它激振荡射流的轴心压力进行了测试和频谱分析 ,给出了压力信号的功率谱。实验表明这种射流振荡幅值高 ,频率宽广 ,冲蚀效果优于普通射流。更多还原

【Abstract】 The oscillating mechanism of the jet induced by external excitation shear flow was described and the excitation condition was analyzed in this paper. Spectrum analysis was applied to investigate the pressure oscillations in the center of the jet which are measured in laboratory. It is shown experimentally that its oscillating amplitude is very large and the jet has broad frequency, Its erosive effect is superior to that of the ordinary jet.更多还原