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化工学报  2015 

两相流流动结构多尺度复杂熵因果关系平面特征

DOI: 10.11949/j.issn.0438-1157.20140772, PP. 1301-1309

Keywords: 气液两相流,多尺度,流动结构,稳定性,复杂熵因果关系平面

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Abstract:

采用一种新的信息熵理论分析了气液两相流流动结构动力学特征。首先考察了典型混沌时间序列的多尺度复杂熵因果关系平面特征,然后将该方法应用于气液两相流3种典型流型(泡状流、段塞流及混状流)的电导传感器波动信号处理,结果表明单尺度复杂熵因果关系平面能够对不同流型线性识别。此外发现多尺度复杂熵因果关系平面能够描述流动结构信息随尺度增加的连续丢失过程,反映了气液两相流流动结构稳定性及复杂性,是理解两相流流动结构非线性动力学特性的一种有用分析工具。

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