| 基于经验模式分解的气液二相流研究 |
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| 引用本文： | 周云龙,刘旭,李洪伟.基于经验模式分解的气液二相流研究[J].化学工程,2011,39(10):59-62. |
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| 作者姓名： | 周云龙 刘旭 李洪伟 |
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| 作者单位： | 1. 东北电力大学能源与动力工程学院,吉林吉林,132012
2. 华北电力大学能源与动力工程学院,北京,102206 |
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| 基金项目： | 国家自然科学基金资助项目(50976018); 吉林省自然科学基金资助项目(20101562) |
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| 摘 要： | 为了更加准确地了解气液二相流动特性,文中用能量熵、奇异熵及Lyapunov指数结合经验模式分解(EMD)的方法对气液二相流进行研究.先对流型信号进行经验模式分解,然后由特征向量计算出经验模式能量熵、奇异熵及最大Lyapunov指数.计算结果表明:经过EMD分解的流型信号的2种熵值及Lyapunov指数能够体现信号的变化...
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| 关 键 词： | 经验模式分解 流型信号 能量熵 奇异熵 Lyapunov指数 |
Research on gas-liquid two-phase flow based on empirical mode decomposition |
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| ZHOU Yun-long,LIU Xu,LI Hong-wei.Research on gas-liquid two-phase flow based on empirical mode decomposition[J].Chemical Engineering,2011,39(10):59-62. |
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| Authors: | ZHOU Yun-long LIU Xu LI Hong-wei |
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| Affiliation: | ZHOU Yun-long1,LIU Xu1,LI Hong-wei2(1.College of Energy Resource and Dynamic Engineering,Northeast Dianli University,Jilin 132012,Jilin Province,China,2.College of Energy Resource and Dynamic Engineering,North China Electric Power University,Beijing 102206,China) |
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| Abstract: | In order to understand the characteristics of gas-liquid two-phase flow more accurately,the gas-liquid two-phase flow was studied by combining energy entropy,singular entropy and Lyapunov exponent with empirical mode decomposition(EMD).Firstly the flow signals were decomposed by EMD,and then the energy entropy,singular entropy and Lyapunov exponent were calculated from the characteristic vectors.The calculation results demonstrate that the energy entropy,singular entropy and Lyapunov exponent of the flow si... |
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| Keywords: | empirical mode decomposition flow signal energy entropy singular entropy Lyapunov exponent |
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