SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2012, Vol. 20 ›› Issue (5): 870-882.

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Testing for Nonlinearity in Dynamic Characteristics of Vertical Upward Oil-Gas-Water Three-phase Bubble and Slug Flows

ZHU Lei, JIN Ningde, GAO Zhongke, DU Meng, WANG Zhenya   

  1. School of Electrical Engineering & Automation, Tianjin University, Tianjin 300072, China
  • Received:2011-04-17 Revised:2011-10-04 Online:2012-11-06 Published:2012-10-28
  • Supported by:
    Supported by the National Natural Science Foundation of China (50974095, 41174109);Gao Zhongke (高忠科) was also supported by the National Natural Science Foundation of China (61104148);the National Science and Technology Major Projects (2011ZX05020-006);Specialized Research Fund for the Doctoral Program of Higher Education of China(20110032120088);the Independent Innovation Foundation of Tianjin University

Testing for Nonlinearity in Dynamic Characteristics of Vertical Upward Oil-Gas-Water Three-phase Bubble and Slug Flows

朱雷, 金宁德, 高忠科, 杜萌, 王振亚   

  1. School of Electrical Engineering & Automation, Tianjin University, Tianjin 300072, China
  • 通讯作者: JIN Ningde,E-mail:ndjin@tju.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (50974095, 41174109);Gao Zhongke (高忠科) was also supported by the National Natural Science Foundation of China (61104148);the National Science and Technology Major Projects (2011ZX05020-006);Specialized Research Fund for the Doctoral Program of Higher Education of China(20110032120088);the Independent Innovation Foundation of Tianjin University

Abstract: Based on the conductance fluctuation signals measured from vertical upward oil-gas-water three-phase flow experiment, time frequency representation and surrogate data method were used to investigate dynamical characteristics of oil-in-water type bubble and slug flows. The results indicate that oil-in-water type bubble flow will turn to deterministic motion with the increase of oil phase fraction fo and superficial gas velocity Usg under fixed flowrate of oil-water mixture Qmix. The dynamics of oil-in-water type slug flow becomes more complex with the increase of Usg under fixed flowrate of oil-water mixture. The change of fo leads to irregular influence on the dynamics of slug flow. These interesting findings suggest that the surrogate data method can be a faithful tool for characterizing dynamic characteristics of oil-in-water type bubble and slug flows.

Key words: oil-gas-water three-phase flow, conductance fluctuating signals, time-frequency representation, surrogate data method

摘要: Based on the conductance fluctuation signals measured from vertical upward oil-gas-water three-phase flow experiment, time frequency representation and surrogate data method were used to investigate dynamical characteristics of oil-in-water type bubble and slug flows. The results indicate that oil-in-water type bubble flow will turn to deterministic motion with the increase of oil phase fraction fo and superficial gas velocity Usg under fixed flowrate of oil-water mixture Qmix. The dynamics of oil-in-water type slug flow becomes more complex with the increase of Usg under fixed flowrate of oil-water mixture. The change of fo leads to irregular influence on the dynamics of slug flow. These interesting findings suggest that the surrogate data method can be a faithful tool for characterizing dynamic characteristics of oil-in-water type bubble and slug flows.

关键词: oil-gas-water three-phase flow, conductance fluctuating signals, time-frequency representation, surrogate data method