title: Multiplex multivariate recurrence network from multi-channel signals for revealing oil-water spatial flow behavior.
abstract: The exploration of the spatial dynamical flow behaviors of oil-water flows has attracted increasing interests on account of its challenging complexity and great significance. We first technically design a double-layer distributed-sector conductance sensor and systematically carry out oil-water flow experiments to capture the spatial flow information. Based on the well-established recurrence network theory, we develop a novel multiplex multivariate recurrence network (MMRN) to fully and comprehensively fuse our double-layer multi-channel signals. Then we derive the projection networks from the inferred MMRNs and exploit the average clustering coefficient and the spectral radius to quantitatively characterize the nonlinear recurrent behaviors related to the distinct flow patterns. We find that these two network measures are very sensitive to the change of flow states and the distributions of network measures enable to uncover the spatial dynamical flow behaviors underlying different oil-water flow patterns. Our method paves the way for efficiently analyzing multi-channel signals from multi-layer sensor measurement system.
authors.affiliation: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China.
authors.forename: Zhong-Ke
authors.initials: ZK
authors.lastname: Gao
authors.affiliation: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China.
authors.forename: Wei-Dong
authors.initials: WD
authors.lastname: Dang
authors.affiliation: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China.
authors.forename: Yu-Xuan
authors.initials: YX
authors.lastname: Yang
authors.affiliation: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Cai