关键词: 汽液固三相, 流动沸腾, 非线性, 确定性混沌, 分维

Abstract: Chaos analysis of the dynamic behavior of temperature fluctuations in a vapor-liquid-solid three phases flow boiling system was conducted in terms of power spectral density function, autocorrelation function, reconstructed phase space, correlation dimension and Kolmogorov entropy.It was shown that the system was non-linear and chaotic. Two or three non-integer correlation dimensions and positive finite value of the Kolmogorov entropy were found in this system.The relationships between heat transfer characteristic and correlation dimension and that between heat transfer characteristic and Kolmogorov entropy were also discussed.Heat transfer coefficient increased with the increase of correlation dimension and Kolmogorov entropy.

Key words: 汽液固三相, 流动沸腾, 非线性, 确定性混沌, 分维