围压条件下风琴管射流自激频率的估算模型

doi:10.3901/JME.2018.18.220

机械工程学报 ›› 2018, Vol. 54 ›› Issue (18): 220-225.doi: 10.3901/JME.2018.18.220

围压条件下风琴管射流自激频率的估算模型

潘岩, 蔡腾飞, 马飞, 邱林宾, 崔立华

北京科技大学机械工程学院北京 100083

收稿日期:2018-01-16 修回日期:2018-04-17 出版日期:2018-09-20 发布日期:2018-09-20
通讯作者: 马飞(通信作者),1968年出生,教授,博士研究生导师。主要研究方向为振动噪声分析与控制、空化射流技术及应用。E-mail:yeke@ustb.edu.cn
作者简介:潘岩,女,1993年出生,博士研究生。主要研究方向为自激振荡射流理论与应用。E-mail:18810636420@163.com;蔡腾飞,男,1992年出生,博士研究生。主要研究方向为自激振荡射流技术与应用。E-mail:caitengfei92@163.com
基金资助:
国家自然科学基金（51774019）和国家“十二五”（DY125-14-T-03）资助项目。

Self-excited Frequency Estimation Model of Organ-pipe Waterjet under Confining Pressure

PAN Yan, CAI Tengfei, MA Fei, QIU Linbin, CUI Lihua

School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083

Received:2018-01-16 Revised:2018-04-17 Online:2018-09-20 Published:2018-09-20

摘要/Abstract

摘要： 风琴管射流自激频率的确定对于调制射流达到强烈的振荡冲蚀效果具有重要作用，而目前难以准确获得，主要原因在于斯特劳哈尔数S_d大小与射流参数、空化数及喷嘴结构参数等诸多因素有关。通过分析风琴管射流自激振荡机理，探讨了自激频率与空化数的关系；基于流体压力脉动信号检测法获取风琴管射流的时域信号及其频谱，并运用“三波共振”理论确定射流的自激频率，依据涡街理论推导出斯特劳哈尔数；通过试验分析环境围压、射流工作压力及射流空化数对自激频率的影响，获得斯特劳哈尔数与射流空化数的关系曲线；基于最小二乘法得到斯特劳哈尔数的拟合公式，建立不同工作压力及围压条件下射流自激频率的估算模型。试验结果表明，给定喷嘴结构条件下，斯特劳哈尔数受环境围压、射流工作压力影响，其取值主要由空化数确定。斯特劳哈尔数的取值范围以估算模型来代替，减少了选取斯特劳哈尔数的盲目性，提高了自激频率的理论计算精度。揭示了斯特劳哈尔数的影响因素及其变化规律，能为自振射流技术在深海领域的应用研究提供理论依据。

关键词: 风琴管射流, 估算模型, 空化数, 斯特劳哈尔数, 自激频率

Abstract: The self-excited frequency of the organ-pipe waterjet plays a key role in the modulation of the jet to achieve strong oscillation and erosion, while it is difficult to be obtained accurately. The main reason is that the value of the Strouhal number is associated with the jet parameters, the cavitation number and the nozzle structure parameters. The self-resonating oscillation mechanismof organ-pipe waterjet is discussed, and the relationship between the self-excited frequency and the cavitation number is analyzed. The pressure signal within pipeline is detected to obtain the jet spectrum, and according to the "triad resonance" theory, the self-excited frequency is distinguished. Furthermore, the influence of the confining pressure, the jet working pressure and the cavitation number on the frequency property are analyzed, and then the relation curve between the Strouhal number and the cavitation number is acquired. The approximate fitting formula of the Strouhal number is obtained based on the least square method, then the estimation model of jet self-excited frequency is established. The test results show that, with a given nozzle structure, the value of the Strouhal number is only related to the cavitation number. The value range of the Strouhal number is replaced by the estimation model, so that the theoretical calculation accuracy of self-excited frequency is improved. The results provide a theoretical basis for the application and study of self-resonatingwaterjet technology in deep-sea area.

Key words: cavitation number, estimation model, organ-pipe waterjet, self-excited frequency, strouhal number

中图分类号:

TG156

潘岩, 蔡腾飞, 马飞, 邱林宾, 崔立华. 围压条件下风琴管射流自激频率的估算模型[J]. 机械工程学报, 2018, 54(18): 220-225.

PAN Yan, CAI Tengfei, MA Fei, QIU Linbin, CUI Lihua. Self-excited Frequency Estimation Model of Organ-pipe Waterjet under Confining Pressure[J]. Journal of Mechanical Engineering, 2018, 54(18): 220-225.

参考文献

[1] LI Deng,KAND Yong,DING Xiaolong,et al. Effects of area discontinuity at nozzle inlet on the characteristics of self-resonating cavitatingwaterjet[J]. Chinese Journal of Mechanical Engineering,2016,29(4):813-824.
[2] BLEVINS R D. Flow-induced vibration[M]. New York:Van Nostrand Reinhold,1977.
[3] CROW S C,CHAMPAGNE F H. Orderly structure in jet turbulence[J]. Journal of Fluid Mechanics,1971,48:547-591.
[4] JOHNSON V E,LINDENMUTH W T,CONN A F,et al. Feasibility study of tuned-resonator,pulsating cavitating waterjet for deep-hole drilling[M]. Albuquerque,NM:Sandia National Labs; Laurel,Maryland:Hydronautics,Inc,1981
[5] 李根生,沈忠厚. 风琴管自振空化喷嘴的设计原理[J]. 石油大学学报,1992,16(5):35-39. LI Gensheng,SHEN Zhonghou. Design principle of organ-pipe cavitating jet nozzles[J]. Journal of the University of Petroleum,China,1992,16(5):35-39.
[6] 李晓红,杨林,王建生,等. 自激振荡脉冲射流装置的固有频率特性[J]. 煤炭学报,2000,25(6):641-644. LI Xiaohong,YANG Lin,WANG Jiansheng,et al. The natural frequency characteristic of the self-excited oscillation pulsed waterjet device[J]. Journal of China Coal Society,2000,25(6):641-644.
[7] 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. TANG Chuanlin,HU Dong,PEI Jianghong. Experimental study on the frequency characteristic of the self-excited oscillation pulsed nozzle[J]. Acta Petrolei Sinica,2007,28(4):122-125.
[8] 王萍辉,马飞. 自激振动空化射流振动分析试验[J]. 机械工程学报,2009,45(10):89-95. WANG Pinghui,MA Fei. Vibration analysis experiment of self-resonating cavitatingwaterjet[J]. Journal of Mechanical Engineering,2009,45(10):89-95.
[9] 马飞,蔡腾飞,柳靖,等. 自振射流频率特性的试验研究[J]. 机械工程学报,2016,52(14):182-187. MA Fei,CAI Tengfei,LIU Jing,et al. Experimental study of self-resonating waterjet frequency characteristics[J]. Journal of Mechanical Engineering,2016,52(14):182-187.
[10] LIAO Zhengfang,LI Jun,CHEN Deshu,et al. Theory and experimental study of the self-excited oscillation pulsed jet nozzle[J]. Chinese Journal of Mechanical Engineering,2003,16(4):379-383.
[11] RAYMOND D W,GROSSMAN J W. Development and testing of a mudjet-augmented PDC bit[M]. California:Sandia National Laboratories,2006.
[12] 刘晶石,姜铁良,庞立军,等. 水轮机过流部件出水边夹角对卡门涡频率的影响[J]. 机械工程学报,2017,53(4):177-183. LIU Jingshi,JIANG Tieliang,PANG Lijun,et al. Influence of outlet edge angle of hydro turbine flow passage components on Karman vortex frequency[J]. Journal of Mechanical Engineering,2017,53(4):177-183.
[13] WU X,MAHEUX E,CHAHINE GL. An experimental study of sheet to cloud cavitation[J] Experimental Thermal and Fluid Science,2017,83:129-140.
[14] 时素果,王国玉,胡常莉,等. 不同温度水体空化水动力脉动特性的试验研究[J]. 机械工程学报,2014,50(8):174-181. SHI Suguo,WANG Guoyu,HU Changli,et al. Experimental study on hydrodynamic characteristics of cavitating flows around hydrofoil under different water temperatures[J]. Journal of Mechanical Engineering,2014,50(8):174-181.
[15] 龙新平,王炯,左丹,等. 文丘里管不同空化阶段空化不稳定特性的试验研究[J]. 机械工程学报,2018,54(2):209-215. LONG Xinping,WANG Jiong,ZUO Dan,et al. Experimental investigation of the instability of cavitation in Veturi tube under different cavitation stage[J]. Journal of Mechanical Engineering,2018,54(2):209-215.
[16] 李根生,沈忠厚. 自振空化射流理论与应用[M]. 东营:中国石油大学出版社,2008. LI Gensheng,SHEN Zhonghou. Theory and application of self-resonating cavitatingwaterjet[M]. Dongying:China University of Petroleum Press,2008.
[17] 薛胜雄,黄汪平,陈正文,等. 高压水射流技术与应用[M]. 北京:机械工业出版社,1998. XUE Shengxiong,HUANG Wangping,CHEN Zhengwen,et al. Technology and application of high pressure waterjet[M]. Beijing:China Machine Press,1998.
[18] PETERSEN R A,CLOUGH R C. The influence of higher harmonics on vortex pairing in an axisymmetric mixing layer[J]. Journal of Fluid Mechanics,1992,239:81-98.

围压条件下风琴管射流自激频率的估算模型

Self-excited Frequency Estimation Model of Organ-pipe Waterjet under Confining Pressure

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 2

编辑推荐

Metrics

本文评价

[1]	马自勇, 罗远新, 王勇勤, 王宇. 齿轮轴向滚轧成形建模与轮齿完整性研究[J]. 机械工程学报, 2018, 54(6): 133-145.
[2]	李金霞, 王超, 丁红兵. 低含气率气液两相流涡街特性研究[J]. 机械工程学报, 2017, 53(20): 161-168.