Chaotic analysis of temperature time series of pulsating heat pipe

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|
作者：
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China [1 ]
不详 [2 ]
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来源：
Huagong Xuebao | 2008年 / 10卷 / 2470-2477期
关键词：
Autocorrelation functions - Chaotic characteristics - Correlation dimensions - Kolmogorov entropies - Long range correlations - Pulsating heat pipe - Temperature oscillations - Thermal Performance;
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学科分类号：
摘要：
Temperature oscillation signal of pulsating heat pipes was studied quantitatively and qualitatively by means of analyses of power spectrum, auto-correlation function, correlation dimension, Kolmogorov entropy and rescaled range statistical analysis. The results showed that the system had deterministic chaotic characteristics which featured non-integer value of correlation dimension about 2.5-11 and positive Kolmogorov entropy. Most Hurst exponents were between 0.8 and 1, indicating long range correlation. Thermal performance was tied with correlation dimension. Higher correlation dimension indicated lower thermal resistance.
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