Journal of System Simulation ›› 2019, Vol. 31 ›› Issue (4): 720-726.doi: 10.16182/j.issn1004731x.joss.17-0145

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Recognition Method on Two-phase Flow Regime Based on Cross Recursive Analysis

He Yongbo, Dong Yushan, Xue Rongrong   

  1. School of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China
  • Received:2017-03-27 Revised:2017-08-04 Online:2019-04-08 Published:2019-11-20

Abstract: Aiming at the problems that the two-phase flow regime recognition speed is slow and the recognition accuracy is low, a flow regime recognition method is proposed based on cross recursive analysis (CRA) without imaging. The false nearest neighbors are used to analyze flow regime capacitance values measured by capacitance sensor to obtain an optimal embedding dimension; and the embedding dimension of cross recursive plot is established for several typical flow patterns. The capacitance values of the simulation flow regimes and the reference flow regimes are analyzed using cross recursion to get a set of cross recursive plots. The similarity of two flow regimes is determined by comparing the ratio of black recursive dots on the main diagonal of cross recursive plot. The simulation experiments of typical oil-gas two-phase flow regime identification are conducted. The simulation result shows that the method can accurately identify different flow regimes of two-phase flow; and the recognition rate is fast.

Key words: two-phase flow, cross recursive analysis, false nearest neighbors, average mutual information method, state recognition, recurrence plot

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