Gas–liquid two-phase flows are frequently encountered in chemical and nuclear industries. The study of gas–liquid flow structures is of great significance for understanding the mechanisms of the flow pattern transition. In this paper, a direct-image multi-electrode conductance sensor (DMCS) was used to detect the structure information of vertical gas–liquid flows. Recurrence plot (RP) and cost-based recurrence plot (CBRP) are validated using typical nonlinear systems, i.e. Lorenz system and Hénon map, and used to analyze the signals collected by the DMCS. The results indicate that the determinism (DET) derived from the CBRP is sensitive to flow pattern evolution, and can also demonstrate the internal differences in the same flow patterns.

中文翻译：

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基于成本的气液两相流系统电导时间序列回归分析

在化学和核工业中经常遇到气液两相流。气液流动结构的研究对于理解流型转变机理具有重要意义。在本文中，直接成像多电极电导传感器（DMCS）用于检测垂直气液流动的结构信息。递归图（RP）和基于成本的递归图（CBRP）使用典型的非线性系统进行验证，即Lorenz系统和Hénon映射，并用于分析DMCS收集的信号。结果表明，由CBRP推导出的确定性（DET）对流型演化敏感，也可以证明相同流型的内部差异。