垂直上升油气水三相泡状流及段塞流动力学特性非线性检验

Chinese Journal of Chemical Engineering ›› 2012, Vol. 20 ›› Issue (5): 870-882.

垂直上升油气水三相泡状流及段塞流动力学特性非线性检验

朱雷; 金宁德; 高忠科; 杜萌; 王振亚

School of Electrical Engineering & Automation, Tianjin University, Tianjin 300072, China

收稿日期:2011-04-17 修回日期:2011-10-04 出版日期:2012-10-28 发布日期:2011-10-04

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

School of Electrical Engineering & Automation, Tianjin University, Tianjin 300072, China

Received:2011-04-17 Revised:2011-10-04 Online:2012-10-28 Published:2011-10-04

摘要/Abstract

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

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

朱雷, 金宁德, 高忠科, 杜萌, 王振亚. 垂直上升油气水三相泡状流及段塞流动力学特性非线性检验[J]. Chinese Journal of Chemical Engineering, 2012, 20(5): 870-882.

ZHU Lei, JIN Ningde, GAO Zhongke, DU Meng, WANG Zhenya. Testing for nonlinearity in dynamic characteristics of vertical upward oil-gas-water three-phase bubble and slug flows[J]. Chin.J.Chem.Eng., 2012, 20(5): 870-882.