Abstract

In this paper, nonlinear behavior of pressure fluctuation in liquid-gas two-phase flow has been studied with the chaos time series analysis method. The chaos time series analysis method is a useful signal processing method for identification of nonlinear behavior of pressure fluctuation in the dynamic system. It is a method treating and analyzing the experimental data based on the determinate chaos dynamics and the time series analysis method, by which from the output of the dynamic system its nonlinear behavior can be researched on the topologic characteristics in the time domain、 frequency domain and phase plane. Otherwise, the dynamic characteristics of liquid-gas two-phase flow are very important for the safe and economical operation of nuclear power station and large-scale conventional power plant.

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