| 核态沸腾中汽化核心处温度时间序列的非线性分析 |
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| 引用本文： | 贾涛,王照亮,布文峰. 核态沸腾中汽化核心处温度时间序列的非线性分析[J]. 上海理工大学学报, 2006, 28(1): 71-74 |
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| 作者姓名： | 贾涛 王照亮 布文峰 |
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| 作者单位： | 中国科学院,工程热物理研究所,北京,100080;中国科学院,工程热物理研究所,北京,100080;中国科学院,工程热物理研究所,北京,100080 |
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| 摘 要： | 对典型核态沸腾传热实验中不同热流密度下汽化核心处的温度时间序列,进行了非线性研究.重建了这些温度时间序列对应的三维吸引子,从三维吸引子中求出了关联维数,并从不同热流密度下的温度时间序列中计算了其相应的最大李亚普诺夫指数.计算结果表明,汽化核心处的温度时间序列具有混沌的特征.
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| 关 键 词： | 汽化核心 吸引子 关联维数 最大李亚普诺夫指数 |
| 文章编号： | 1007-6735（2006）01-0071-04 |
| 收稿时间： | 2005-05-21 |
| 修稿时间： | 2005-05-21 |
Nonlinear analysis of the temperature-time series at the nucleation site in nucleate boiling |
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| JIA Tao,WANG Zhao-liang,BU Wen-feng. Nonlinear analysis of the temperature-time series at the nucleation site in nucleate boiling[J]. Journal of University of Shanghai For Science and Technology, 2006, 28(1): 71-74 |
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| Authors: | JIA Tao WANG Zhao-liang BU Wen-feng |
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| Affiliation: | Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | The nonlinear analysis of the temperaturetime series at nucleation site in a typical nucleate boiling heat transfer experiment in different heat fluxes is presented.The threedimensional attractors of the temperaturetime series are reconstructed.Then,from the threedimensional attractors,the correlation dimensions,which reflect the complex character of the attractors,are calculated and the computation of the maximum Lyapunov exponents of the temperaturetime series is carried out in different heat fluxes.The calculation result of the maximum Lyapunov exponent,a parameter quantitatively estimating whether a physical process has the character of chaos,shows that the temperaturetime series at the nucleation site does have chaos characters. |
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| Keywords: | nucleation site attractor correlation dimension maximum Lyapunov exponent |
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