Experimental study on the frequency characteristic of the self-excited oscillation pulsed nozzle

doi:10.7623/syxb200704026

Editorial office of ACTA PETROLEI SINICA ›› 2007, Vol. 28 ›› Issue (4): 122-125.DOI: 10.7623/syxb200704026

• Petroleum Engineering • Previous Articles Next Articles

Experimental study on the frequency characteristic of the self-excited oscillation pulsed nozzle

Tang Chuanlin, Hu Dong, Pei Jianghong

Institute of Water Jet, Hunan University of Technology, Zhuzhou 412008, China

Received:2006-07-21 Revised:2006-12-07 Online:2007-07-25 Published:2010-05-21

自激振荡脉冲射流喷嘴频率特性实验研究

唐川林, 胡东, 裴江红

湖南工业大学水射流研究所湖南株洲412008

作者简介:唐川林,男,1963年8月生,1999年获重庆大学工学博士学位,现任湖南工业大学机械学院院长,主要从事高效射流理论及应用研究.E-mail:TCL5608@126.com
基金资助:
国家自然科学基金项目(No.50374087);湖南省教育厅重点项目(04A067)联合资助

Abstract

Abstract: The model of jet oscillation frequency was given on the basis of hydroacoustics and fluid dynamics.The SD150 test system was used to analyze the effects of dynamic parameters on the jet oscillation frequency.The effects of pump pressure and the length of the oscillation cavity on the jet oscillation frequency were studied.The test results showed that the peak value of the self-excited oscillation pulsed water jet is larger by about 20% than that of continuous jet.The oscillation frequency increased while increasing pump pressure and decreased while increasing the length of oscillation cavity.There was an optimum length of oscillation cavity corresponding to the pressure peak value of the self-excited oscillation pulsed water jet.Experimental result is in good agreement with that of theoretical analysis.

Key words: self-excited oscillation pulsed water jet, jet nozzle, oscillation frequency, pump pressure, length of cavity, experimental study

摘要： 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,脉冲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。

关键词: 自激振荡脉冲射流, 喷嘴, 振荡频率, 泵压, 腔长, 实验研究

CLC Number:

TE248

Tang Chuanlin, Hu Dong, Pei Jianghong. Experimental study on the frequency characteristic of the self-excited oscillation pulsed nozzle[J]. Editorial office of ACTA PETROLEI SINICA, 2007, 28(4): 122-125.

唐川林, 胡东, 裴江红. 自激振荡脉冲射流喷嘴频率特性实验研究[J]. 石油学报, 2007, 28(4): 122-125.

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Experimental study on the frequency characteristic of the self-excited oscillation pulsed nozzle

自激振荡脉冲射流喷嘴频率特性实验研究

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