Abstract
Inclined oil–water two-phase flow exhibits random, unstable spatiotemporal structure, associated with the countercurrent caused by gravity and components interacting. In this paper, the nonlinear analysis to give a deeper understanding of inclined oil–water two-phase flow has been conducted. Firstly, we obtained the multivariate measurement of different flow patterns by vertical multi-electrode array system. Then, based on the multivariate refined composite entropy and transfer entropy, a dynamic nonlinear analysis framework is proposed to characterize the inclined oil–water two-phase flow. The results suggest that the proposed framework can reveal the dynamic information hidden in the oil droplet swarms and countercurrent water motion.
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Acknowledgements
This study was supported by National Natural Science Foundation of China (Grant Nos. 42074142, 51527805, 11572220).
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Ren, W., Jin, N. Nonlinear interaction underlying flow structure transition of inclined oil–water two-phase countercurrent flow. Eur. Phys. J. Plus 136, 560 (2021). https://doi.org/10.1140/epjp/s13360-021-01555-0
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DOI: https://doi.org/10.1140/epjp/s13360-021-01555-0