| 气液两相流流型图像信息熵递归特性分析 |
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| 引用本文： | 洪文鹏,刘燕,周云龙. 气液两相流流型图像信息熵递归特性分析[J]. 热能动力工程, 2011, 26(5) |
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| 作者姓名： | 洪文鹏 刘燕 周云龙 |
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| 作者单位： | 东北电力大学能源与动力工程学院,吉林吉林,132012 |
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| 摘 要： | 利用高速摄像仪采集了节距比分别为1.3和1.8,排序为10排×4列和10排×6列两种管束间的不同流型的流动图像,并针对泡状流、间歇流、雾状流三种典型流动图像,提取流型图像的信息熵序列,采用递归分析法研究了气液两相流不同流型以及过渡流型熵序列的动力学特性。研究结果表明:不同流型图像的熵序列的递归结构不同。泡状流图像的信息熵序列递归图为点状结构;间歇流为点和块相结合结构,而雾状流对角线结构最清晰。过渡流型图像的熵序列递归结构清晰的演化了流型转变过程。信息熵序列的递归结构图能够较好地反映流型演化机理,且递归特征量随气相折算流速变化敏感,为研究气液两相流流型机理提供了一种较有效方法。
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| 关 键 词： | 气液两相流 管束 流型 信息熵 递归图 |
Analysis of the Image Information Entropy Recurrence Characteristics of a Gas-liquid Two-phase Flow Pattern |
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| HONG Wen-peng,LIU Yan,ZHOU Yun-long. Analysis of the Image Information Entropy Recurrence Characteristics of a Gas-liquid Two-phase Flow Pattern[J]. Journal of Engineering for Thermal Energy and Power, 2011, 26(5) |
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| Authors: | HONG Wen-peng LIU Yan ZHOU Yun-long |
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| Affiliation: | HONG Wen-peng,LIU Yan,ZHOU Yun-long(College of Energy Source and Power Engineering,Northeast University of Electric Power,Jilin,China,Post Code:132012) |
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| Abstract: | By using a high speed video camera,acquired were the flow images of various flow patterns of two kinds of tube bundle in 10 rows and 4 columns with a pitch of 1.3 and 1.8 respectively.In the light of the typical flow images in three types,namely bubble-shaped flow,intermittent flow and mist flow,the information entropy sequence of the various flow pattern images was extracted and the dynamic characteristics of various flow patterns of the gas-liquid two-phase flow and the entropy sequence of the transit flo... |
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| Keywords: | gas-liquid two-phase flow tube bundle flow pattern information entropy recurrence chart |
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