The complex phase interactions of the two-phase flow are a key factor in understanding the flow pattern evolutional mechanisms, yet these complex flow behaviors have not been well understood. In this paper, we employ a series of gas–liquid two-phase flow multivariate fluctuation signals as observations and propose a novel interconnected ordinal pattern network to investigate the spatial coupling behaviors of the gas–liquid two-phase flow patterns. In addition, we use two network indices, which are the global subnetwork mutual information ( ) and the global subnetwork clustering coefficient ( ), to quantitatively measure the spatial coupling strength of different gas–liquid flow patterns. The gas–liquid two-phase flow pattern evolutionary behaviors are further characterized by calculating the two proposed coupling indices under different flow conditions. The proposed interconnected ordinal pattern network provides a novel tool for a deeper understanding of the evolutional mechanisms of the multi-phase flow system, and it can also be used to investigate the coupling behaviors of other complex systems with multiple observations.
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June 2023
Research Article|
June 05 2023
Interconnected ordinal pattern complex network for characterizing the spatial coupling behavior of gas–liquid two-phase flow
Special Collection:
Ordinal Methods: Concepts, Applications, New Developments and Challenges
Meng Du
;
Meng Du
a)
(Project administration, Writing – original draft)
1
School of Electrical Engineering and Automation, Tianjin University of Science and Technology
, Tianjin 300222, China
a)Author to whom correspondence should be addressed: mdu@tust.edu.cn
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Jie Wei
;
Jie Wei
b)
(Investigation, Software, Visualization)
1
School of Electrical Engineering and Automation, Tianjin University of Science and Technology
, Tianjin 300222, China
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Meng-Yu Li
;
Meng-Yu Li
c)
(Methodology)
2
School of Electrical Engineering and Automation, Tianjin University
, Tianjin 300072, China
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Zhong-ke Gao
;
Zhong-ke Gao
d)
(Supervision, Writing – review & editing)
2
School of Electrical Engineering and Automation, Tianjin University
, Tianjin 300072, China
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Jürgen Kurths
Jürgen Kurths
e)
(Writing – review & editing)
3
Research Department Complexity Science, Potsdam Institute for Climate Impact Research
, 14473 Potsdam, Germany
4
Institute of Physics, Humboldt University of Berlin
, 12489 Berlin, Germany
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a)Author to whom correspondence should be addressed: mdu@tust.edu.cn
b)
Electronic mail: zj674022840@outlook.com
c)
Electronic mail: xyblmy@tju.edu.cn
d)
Electronic mail: zhongkegao@tju.edu.cn
e)
Electronic mail: Juergen.Kurths@pik-potsdam.de
Note: This paper is part of the Focus Issue on Ordinal Methods: Concepts, Applications, New Developments and Challenges.
Chaos 33, 063108 (2023)
Article history
Received:
February 12 2023
Accepted:
May 11 2023
Citation
Meng Du, Jie Wei, Meng-Yu Li, Zhong-ke Gao, Jürgen Kurths; Interconnected ordinal pattern complex network for characterizing the spatial coupling behavior of gas–liquid two-phase flow. Chaos 1 June 2023; 33 (6): 063108. https://doi.org/10.1063/5.0146259
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