气液两相流波动信号的时频谱分析研究

孙斌; 王二朋; 郑永军

doi:10.7498/aps.60.014701

摘要

为了研究气液两相流不同流型的动态特性,通过小波变换、希尔伯特-黄变换及自适应最优核三种时频方法对气液两相流动态差压信号进行处理.通过对时频谱的分析,可以清晰看出当流型从泡状流向弹状流、塞状流的转化过程中,信号的主要能量由15—35 Hz之间的频带向0—8 Hz频带转移,在弹状流时出现了两个谱峰.实验结果表明:希尔伯特-黄变换及自适应最优核方法的时频分辨率比小波分析高.基于自适应最优核方法的脊信息的提取,克服了模糊平面加窗效应的影响,对气液两相流动态信号表现出更高的时频分辨率,并增强了时频平面信息的可读性.

关键词:

Abstract

In order to study different flow patterns’ dynamic characteristics of gas-liquid two-phase flow, three time-frequency analysis methods are introduced to process the dynamic differential pressure signal of gas-liquid two-phase flow, such as the wavelet transform, Hilbert-Huang transform and adaptive optimal-kernel method. The results show that the main part of energy is transferred from frequency band 15—35 Hz to 0—8 Hz when the flow pattern changes from bubbly flow to slug flow and plug flow, and two spectrum peaks are observed at slug flow. The experimental results show that the time-frequency resolution of Hilbert-Huang transform and adaptive optimal-kernel is higher than that of wavelet transform. The extractions of ridge information based on adaptive optimal-kernel overcome the influence of fuzzy plane windowing effect, and enhance the readability of time-frequency plane information. The time-frequency analysis clearly shows the dynamic characteristics of different flow patterns, and describes the variation rules with time. It is helpful to further study the mechanism of gas-liquid two-phase flow.

Keywords:

作者及机构信息

1.
中国计量学院,计量测试工程学院,杭州 310018

基金项目: 国家自然科学基金理论物理专项基金(批准号:10947154)和浙江省自然科学基金(批准号:Y1100842)资助的课题.

Authors and contacts

1.
College of Metrological Technology and Engineering, China Jiliang University, Hangzhou 310018, China

参考文献

[1]	Dong F,Jin N D,Zong Y B,Wang Z Y 2008 Acta Phys. Sin. 57 6146 (in Chinese) [董芳、金宁德、宗艳波、王振亚 2008 物理学报 57 6146 ]
[2]	Zheng G B, Jin N D 2009 Acta Phys. Sin. 58 4485 (in Chinese) [郑桂波、金宁德 2009 物理学报 58 4485 ]
[3]	Lao L Y, Zhang H J, Zhang M 1996 Application of signal processing technology to achieve two-phase flow parameter detection-Progress in Multiphase Flow Measurement Technology (Beijing: Petroleum Industry Press) pp 103—109 (in Chinese) [劳力云、张宏建、张鸣 1996应用信号处理技术实现两相流参数检测—多相流检测技术进展(北京:石油工业出版社)第103—109页 ]
[4]	Jones O C, Zuber N 1975 Int. J. Multiphase Flow 2 273
[5]	Vince M A, Lahey R T 1982 Int. J. Multiphase Flow 8 93
[6]	Tutu N K 1982 Int. J. Multiphase Flow 8 443
[7]	Matsui G 1986 Nucl. Eng. Des. 95 221
[8]	Chen G, Huang Z Y, Wang B L 1999 Chin. J. Sci. Instrum. 20 117 (in Chinese) [陈珙、黄志尧、王保良 1999仪器仪表学报 20 117 ]
[9]	Tan C, Dong F, Wu M M 2007 Flow Measurement and Instrumentation 18 5
[10]	Jin N D, He X F, Luo D 2006 Transducer and Microsystem Technology 25 29 (in Chinese) [金宁德、何晓飞、罗彤2006传感器与微系统 25 29 ]
[11]	Peng Z K, Tse P W, Chu F L 2005 Mechanical Systems and Signal Processing 19 974
[12]	Sun B,Zhang H J 2007 Chin. J. Sens. Actuators 20 862 (in Chinese) [孙斌、张宏建 2007传感技术学报 20 862 ]
[13]	Ding H, Huang Z Y, Song Z H, Yan Y 2007 Flow Measurement and Instrumentation 18 1
[14]	Sun B, Huang S Q, Zhou Y L, Guan Y B 2008 Chin. J. Sci. Instrum. 29 5 (in Chinese) [孙斌、黄胜全、周云龙、关跃波 2008仪器仪表学报 29 5 ]
[15]	Zhang Y H,Jin G B,Li T Y 2006 Proc. CSEE 26 84 (in Chinese) [张宇辉、金国彬、李天云 2006中国电机工程学报 26 84 ]
[16]	Gong Z Q,Zou M W,Gao X Q,Dong W J 2005 Acta Phys. Sin. 54 3947 (in Chinese) [龚志强、邹明玮、高新全、董文杰 2005 物理学报 54 3947 ]

施引文献

[1]	Dong F,Jin N D,Zong Y B,Wang Z Y 2008 Acta Phys. Sin. 57 6146 (in Chinese) [董芳、金宁德、宗艳波、王振亚 2008 物理学报 57 6146 ]
[2]	Zheng G B, Jin N D 2009 Acta Phys. Sin. 58 4485 (in Chinese) [郑桂波、金宁德 2009 物理学报 58 4485 ]
[3]	Lao L Y, Zhang H J, Zhang M 1996 Application of signal processing technology to achieve two-phase flow parameter detection-Progress in Multiphase Flow Measurement Technology (Beijing: Petroleum Industry Press) pp 103—109 (in Chinese) [劳力云、张宏建、张鸣 1996应用信号处理技术实现两相流参数检测—多相流检测技术进展(北京:石油工业出版社)第103—109页 ]
[4]	Jones O C, Zuber N 1975 Int. J. Multiphase Flow 2 273
[5]	Vince M A, Lahey R T 1982 Int. J. Multiphase Flow 8 93
[6]	Tutu N K 1982 Int. J. Multiphase Flow 8 443
[7]	Matsui G 1986 Nucl. Eng. Des. 95 221
[8]	Chen G, Huang Z Y, Wang B L 1999 Chin. J. Sci. Instrum. 20 117 (in Chinese) [陈珙、黄志尧、王保良 1999仪器仪表学报 20 117 ]
[9]	Tan C, Dong F, Wu M M 2007 Flow Measurement and Instrumentation 18 5
[10]	Jin N D, He X F, Luo D 2006 Transducer and Microsystem Technology 25 29 (in Chinese) [金宁德、何晓飞、罗彤2006传感器与微系统 25 29 ]
[11]	Peng Z K, Tse P W, Chu F L 2005 Mechanical Systems and Signal Processing 19 974
[12]	Sun B,Zhang H J 2007 Chin. J. Sens. Actuators 20 862 (in Chinese) [孙斌、张宏建 2007传感技术学报 20 862 ]
[13]	Ding H, Huang Z Y, Song Z H, Yan Y 2007 Flow Measurement and Instrumentation 18 1
[14]	Sun B, Huang S Q, Zhou Y L, Guan Y B 2008 Chin. J. Sci. Instrum. 29 5 (in Chinese) [孙斌、黄胜全、周云龙、关跃波 2008仪器仪表学报 29 5 ]
[15]	Zhang Y H,Jin G B,Li T Y 2006 Proc. CSEE 26 84 (in Chinese) [张宇辉、金国彬、李天云 2006中国电机工程学报 26 84 ]
[16]	Gong Z Q,Zou M W,Gao X Q,Dong W J 2005 Acta Phys. Sin. 54 3947 (in Chinese) [龚志强、邹明玮、高新全、董文杰 2005 物理学报 54 3947 ]

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