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试验测试分析了主要参数对自激振荡脉冲射流频率和压力动态特性的影响,并应用相似流网络模型分析了试验结果。研究表明,射流的频率随振荡腔长的增大而降低,随泵压的升高而增大,振荡腔长的影响作用更为明显,存在一个最佳振荡腔长使得脉冲射流压力峰值达到最大。研究结果对脉冲射流喷嘴的设计及应用具有参考价值。
The experimental test analyzes the influence of the main parameters on the frequency and pressure dynamic characteristics of the self-oscillating pulse jet, and analyzes the test results by using the similar flow network model. The results show that the frequency of the jet decreases with the increase of the oscillation cavity length and increases with the increase of the pump pressure. The effect of the oscillation cavity length is more obvious. There exists an optimum oscillation cavity length that maximizes the peak of the pulse jet pressure . The research results have reference value for the design and application of pulse jet nozzle.