自激振荡脉冲射流的动态特性研究  

Study on the Dynamic Characteristics of the Self-Excited Oscillation Pulsed Jet

作　　者：杨林[1] 彭中波[1] 唐川林[2] 

机构地区：[1]重庆交通大学机电学院,重庆400074 [2]湖南工业大学机械工程学院

出　　处：《矿山机械》2008年第13期3-6,共4页Mining & Processing Equipment

基　　金：国家自然科学基金(50504021);教育部科学技术研究重点项目(206122);重庆市教委科学技术研究项目(KJ070419)

摘　　要：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 influences on the frequency and pressure dynamic characteristics of the self-excited oscillation pulsed jet （SEOPJ） of the main parameters are tested and analyzed based on the similar fluid network model. The results show that the oscillating frequency of jet increases with the increase of the pumping pressure while decreases with the increase of the length of the oscillation cavity. In addition,the frequeno＇ characteristics of the jet are significantly influenced by the length of the oscillation cavity. There is an optimal length of the oscillation cavity corresponding to the pressure peak value of the SEOPJ. The results provide a reference for the design and application of the pulsedjet nozzle.

关 键 词：自激振荡 脉冲射流 动态特性 频率 压力 

分 类 号：TP601[自动化与计算机技术—控制理论与控制工程]