Application of chaos theory in identification of two-phase flow patterns and transitions in a small, horizontal, rectangular channel | Zendy

Y. Cai | Zendy; M.W. Wambsganss | Zendy; J.A. Jendrzejczyk | Zendy

Open Access

Application of chaos theory in identification of two-phase flow patterns and transitions in a small, horizontal, rectangular channel

Author(s) -

Y. Cai,

M.W. Wambsganss,

J.A. Jendrzejczyk

Publication year - 1996

Language(s) - English

Resource type - Reports

DOI - 10.2172/207657

Subject(s) - lyapunov exponent , autocorrelation , flow (mathematics) , statistical physics , correlation dimension , chaotic , mathematics , trajectory , phase (matter) , chaos theory , fractal dimension , fractal , plane (geometry) , spectral density , function (biology) , open channel flow , channel (broadcasting) , physics , mathematical analysis , geometry , computer science , statistics , biology , computer network , quantum mechanics , astronomy , artificial intelligence , evolutionary biology

Various measurement tools of chaos theory were applied to analyze two-phase pressure signals with the objective to identify and interpret flow pattern transitions for two-phase flows in a small, horizontal rectangular channel. These measurement tools included power spectral density function, autocorrelation function, pseudo-phase-plane trajectory, Lyapunov exponents, and fractal dimensions. It was demonstrated that the randomlike pressure fluctuations characteristic of two-phase flow in small rectangular channels are chaotic in nature. As such, they are governed by a high-order deterministic system. The correlation dimension is potentially a new approach for identification of certain two-phase flow patterns and transitions

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