Nonlinear Analysis of Gas-Water/Oil-Water Two-Phase Flow in Complex Networks

1. Front Matter

   Pages i-xiii

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2. Introduction

   • Zhong-Ke Gao, Ning-De Jin, Wen-Xu Wang

   Pages 1-6

3. Definition of Flow Patterns

   • Zhong-Ke Gao, Ning-De Jin, Wen-Xu Wang

   Pages 7-11

4. The Experimental Flow Loop Facility and Data Acquisition

   • Zhong-Ke Gao, Ning-De Jin, Wen-Xu Wang

   Pages 13-23

5. Community Detection in Flow Pattern Complex Network

   • Zhong-Ke Gao, Ning-De Jin, Wen-Xu Wang

   Pages 25-34

6. Nonlinear Dynamics in Fluid Dynamic Complex Network

   • Zhong-Ke Gao, Ning-De Jin, Wen-Xu Wang

   Pages 35-46

7. Gas-Water Fluid Structure Complex Network

   • Zhong-Ke Gao, Ning-De Jin, Wen-Xu Wang

   Pages 47-62

8. Oil-Water Fluid Structure Complex Network

   • Zhong-Ke Gao, Ning-De Jin, Wen-Xu Wang

   Pages 63-71

9. Directed Weighted Complex Network for Characterizing Gas-Liquid Slug Flow

   • Zhong-Ke Gao, Ning-De Jin, Wen-Xu Wang

   Pages 73-83

10. Markov Transition Probability-Based Network for Characterizing Horizontal Gas-Liquid Two-Phase Flow

    • Zhong-Ke Gao, Ning-De Jin, Wen-Xu Wang

    Pages 85-93

11. Recurrence Network for Characterizing Bubbly Oil-in-Water Flows

    • Zhong-Ke Gao, Ning-De Jin, Wen-Xu Wang

    Pages 95-102

12. Conclusions

    • Zhong-Ke Gao, Ning-De Jin, Wen-Xu Wang

    Pages 103-103

Understanding the dynamics of multi-phase flows has been a challenge in the fields of nonlinear dynamics and fluid mechanics. This chapter reviews our work on two-phase flow dynamics in combination with complex network theory. We systematically carried out gas-water/oil-water two-phase flow experiments for measuring the time series of flow signals which is studied in terms of the mapping from time series to complex networks. Three network mapping methods were proposed for the analysis and identification of flow patterns, i.e. Flow Pattern Complex Network (FPCN), Fluid Dynamic Complex Network (FDCN) and Fluid Structure Complex Network (FSCN). Through detecting the community structure of FPCN based on K-means clustering, distinct flow patterns can be successfully distinguished and identified. A number of FDCN’s under different flow conditions were constructed in order to reveal the dynamical characteristics of two-phase flows. The FDCNs exhibit universal power-law degree distributions. The power-law exponent and the network information entropy are sensitive to the transition among different flow patterns, which can be used to characterize nonlinear dynamics of the two-phase flow. FSCNs were constructed in the phase space through a general approach that we introduced. The statistical properties of FSCN can provide quantitative insight into the fluid structure of two-phase flow. These interesting and significant findings suggest that complex networks can be a potentially powerful tool for uncovering the nonlinear dynamics of two-phase flows.

• Complex Networks
• Multi-phase Flow
• Nonlinear Dynamics
• Sensors Integration
• Time Series Analysis

• School of Electrical Engineering and Aut, Tianjin University, Tianjin, People's Republic of China

  Zhong-Ke Gao

• Tianjin University School of Electrical Engineering and Aut, Tianjin, People's Republic of China

  Ning-De Jin

• School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, USA

  Wen-Xu Wang

Prof. Zhong-Ke Gao, Tianjin University, China

Prof. Dr. Ning-De JIN, Tianjin University, China

Prof. Wen-Xu Wang, Arizona State University, USA,

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