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Experimental study on the frequency characteristic of the self-excited oscillation pulsed nozzle
Author(s): 
Pages: 122-125
Year: Issue:  4
Journal: ACTA PETROLEI SINICA

Keyword:  自激振荡脉冲射流喷嘴振荡频率泵压腔长实验研究;
Abstract: 基于水声学和流体动力学原理,建立了振荡腔内脉冲射流频率模型,研究结果表明,模态数、流体密度及密度变化率是影响射流频率的关键因素.采用SD150测试系统,分析了自激振荡脉冲射流动态特性中各参数对其频率的影响程度,泵压和自激振荡腔长对射流频率影响的实验结果表明,脉)中射流幅值比连续射流提高了约20%;泵压升高,射流频率增加;腔长增大,射流频率降低,且存在一个使脉冲射流压力峰值达到最大的最佳腔长.实验结果与理论分析一致.
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