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多相反应器中压力波动信号的非线性分析
引用本文:顾丽莉,杨劲,王力红,石炎福.多相反应器中压力波动信号的非线性分析[J].昆明理工大学学报(理工版),2003,28(2):69-72,76.
作者姓名:顾丽莉  杨劲  王力红  石炎福
作者单位:1. 昆明理工大学,生物与化学工程学院,云南,昆明,650224
2. 昆明理工大学,信息工程与自动化学院,云南,昆明,650051
3. 四川大学,化工学院,四川,成都,610065
基金项目:昆明理工大学科研发展基金资助项目
摘    要:通过重构相空间、Poincare截面、分维和Kolmogorov熵等混沌分析方法对气液固三相并流流动系统的压力波动信号进行了定性研究,研究表明:此类系统存在有非线性混沌现象;并用确定性混沌分析方法对其压力波动信号作了进一步探讨。此类系统普遍存在2—3个分维,其中低频大尺度波动对应的分维反映全局动力学行为,其余两个反映局部性质.

关 键 词:多相反应器  压力波动信号  非线性分析  重构相空间  Poincare截面  分维  混沌分析  气液固三相并流流动系统
文章编号:1007-855X(2003)02-0069-05

Nonlinear Analysis of Pressure Fluctuation in Multi-Phase Reactors
GU Li-li,YANG Jin,WANG Li-hong,SHI Yan-fu.Nonlinear Analysis of Pressure Fluctuation in Multi-Phase Reactors[J].Journal of Kunming University of Science and Technology(Natural Science Edition),2003,28(2):69-72,76.
Authors:GU Li-li  YANG Jin  WANG Li-hong  SHI Yan-fu
Abstract:Nonlinear analysis of the dynamic behaviors of multi - phases flow system is conducted by reconstructed phase space, Poincare section, correlation dimension and Kolmogorov entropy. It shows that this is a non -linear chaos system. Two or three non - integer correlation dimensions and positive finite vales of the Kolmogorov entropies are found in this system. One correlation dimension is corresponding to small - scale fluctuations, probably representing particle motion and local turbulence, and another corresponds to low frequency fluctuation, reflecting large - scale phenomena and the third one indicates medium scale fluctuation, which reflects the self -similarity of the chaos system.
Keywords:multi - phases flow  reconstructed phase space  Poincare section  chaotic identification  
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