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基于双耦合Duffing振子的气液两相流动特性分析

李洪伟 苏全 孙斌 周云龙

李洪伟, 苏全, 孙斌, 等 . 基于双耦合Duffing振子的气液两相流动特性分析[J]. 北京航空航天大学学报, 2017, 43(11): 2249-2258. doi: 10.13700/j.bh.1001-5965.2017.0058
引用本文: 李洪伟, 苏全, 孙斌, 等 . 基于双耦合Duffing振子的气液两相流动特性分析[J]. 北京航空航天大学学报, 2017, 43(11): 2249-2258. doi: 10.13700/j.bh.1001-5965.2017.0058
LI Hongwei, SU Quan, SUN Bin, et al. Analysis of gas-liquid two-phase flow characteristics based on double coupled Duffing oscillator[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(11): 2249-2258. doi: 10.13700/j.bh.1001-5965.2017.0058(in Chinese)
Citation: LI Hongwei, SU Quan, SUN Bin, et al. Analysis of gas-liquid two-phase flow characteristics based on double coupled Duffing oscillator[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(11): 2249-2258. doi: 10.13700/j.bh.1001-5965.2017.0058(in Chinese)

基于双耦合Duffing振子的气液两相流动特性分析

doi: 10.13700/j.bh.1001-5965.2017.0058
基金项目: 

国家自然科学基金 51406031

吉林省教育厅基金 2015-243

吉林省科技厅基金 20160520032JH

吉林省科技厅基金 20170101123JC

详细信息
    作者简介:

    李洪伟  男, 博士, 副教授。主要研究方向:多相流参数检测、微小通道两相流传热与流动特性研究

    苏全  男, 硕士研究生。主要研究方向:微小通道两相流传热与流动特性研究

    孙斌  男, 博士, 教授。主要研究方向:多相流参数检测、纳米流体强化传热

    周云龙  男, 博士, 教授。主要研究方向:流体机械故障诊断、多相流参数检测

    通讯作者:

    李洪伟, E-mail:lihongweihw@163.com

  • 中图分类号: O359.1

Analysis of gas-liquid two-phase flow characteristics based on double coupled Duffing oscillator

Funds: 

National Natural Science Foundation of China 51406031

Science Foundation of Jilin Province Education Department 2015-243

Natural Science Foundation of Jilin Province 20160520032JH

Natural Science Foundation of Jilin Province 20170101123JC

More Information
  • 摘要:

    提出了双耦合Duffing振子仿真系统检测小通道气液两相流型信号的方法。搭建了双耦合Duffing振子仿真系统,针对流型信号的特征确定了3个关键参数:阻尼比、耦合系数和频率,并应用典型混沌信号Lorenz和Rössler对该仿真系统进行了性能检测。在两相流型信号检测时,提取了振子振动的瞬时速度和位移2个特征值,并基于特征值对流型动力学特性及流型辨识进行了深入研究。结果表明:通过对典型混沌系统的检测验证,发现本文检测方法具有较好的抗噪能力,能够较好地表征典型信号的混沌特性。提取的2个特征值能够揭示出小通道气液两相流型转变过程中气液两相间的作用机理。系统的振子振动瞬时速度结合位移实现了小通道气液两相流典型流型的准确识别,有助于其他不同介质的多相流动特性分析与流型辨识。

     

  • 图 1  双耦合Duffing振子仿真系统

    Figure 1.  Double coupled Duffing oscillator simulation system

    图 2  2种混沌信号不同噪声下的相轨迹图

    Figure 2.  Phase trajectory chart of two chaotic signals with different noise

    图 3  气液两相流实验系统

    Figure 3.  Gas-liquid two-phase flow experimental system

    图 4  4种典型流型的图像

    Figure 4.  Images of four typical flow patterns

    图 5  4种典型流型的差压信号

    Figure 5.  Pressure difference signals of four typical flow patterns

    图 6  jL=0.277 8 m/s时4种典型流型对应的系统相图

    Figure 6.  System phase diagrams of four typical flow patterns when jL=0.277 8 m/s

    图 7  jL=0.694 5 m/s时4种典型流型对应的系统相图

    Figure 7.  System phase diagrams of four typical flow patterns when jL=0.694 5 m/s

    图 8  jL=1.389 0 m/s时4种典型流型对应的系统相图

    Figure 8.  System phase diagrams of four typical flow patterns when jL=1.389 0 m/s

    图 9  振子振动瞬时速度随气相表观速度的变化

    Figure 9.  Variation of oscillation instantaneous velocity of oscillator with gaseous phase superficial velocity

    图 10  1 s时刻振子振动位移随气相表观速度的变化

    Figure 10.  Variation of oscillation displacement of oscillator with gaseous phase superficial velocity at moment of 1 s

    图 11  水力直径为0.85 mm时无量纲速度与位移的流型

    Figure 11.  Flow pattern of dimensionless flow velocity and displacement when hydraulic diameter is 0.85 mm

    图 12  水力直径为1.15 mm时无量纲速度与位移的流型

    Figure 12.  Flow pattern of dimensionless flow velocity and displacement when hydraulic diameter is 1.15 mm

    表  1  不同时刻振子振动瞬时速度在3种流型间的ηd2

    Table  1.   Values of η and d2 of oscillation instantaneous velocity of oscillator among three flow patterns at different moments

    时刻/sηs, saηs, aηsa, ads, sa2ds, a2dsa, a2
    12.5243.0472.9861.1241.3970.985
    51.8752.8921.2031.2541.0480.532
    102.3051.9072.3870.8561.1131.065
        注:s—段塞流;a—环状流;sa—段塞-环状过渡流。
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-02-13
  • 录用日期:  2017-04-24
  • 网络出版日期:  2017-11-20

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