| 旋流静态混合器内瞬态速度时间序列多尺度符号化分析 |
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| 引用本文： | 吴剑华,孟辉波,高艳丽,刘志强,禹言芳.旋流静态混合器内瞬态速度时间序列多尺度符号化分析[J].应用基础与工程科学学报,2011,19(5):799-809. |
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| 作者姓名： | 吴剑华 孟辉波 高艳丽 刘志强 禹言芳 |
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| 作者单位： | 沈阳化工大学机械工程学院辽宁省化工静态混合反应工程技术研究中心,辽宁沈阳,110142 |
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| 基金项目： | 中央支持地方高校发展专项资金计划项目，辽宁省高等学校重点实验室科研计划项目 |
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| 摘 要： | 利用激光多普勒粒子分析仪对长径比为1.25的旋流静态混合器内瞬态流场进行测量.基于经验模态分解(EMD)方法将测得SK型静态混合器速度信号进行多尺度分解,并将分解的各阶固有模态函数IMF进行符号化,采用修正的Shannon熵(Hs)评价各尺度下的微观动力学特征.通过对静态混合器内不同尺度下瞬态速度波动信号的Hs分析,发...
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| 关 键 词： | 静态混合器 经验模态分解 固有模态函数 符号化分析 Hs熵 |
Multi-scale Symbolic Analysis of Instantaneous Velocity Time Series in the Static Mixer with Twisted-leaves |
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| WU Jianhua,MENG Huibo,GAO Yanli,LIU Zhiqiang,YU Yanfang.Multi-scale Symbolic Analysis of Instantaneous Velocity Time Series in the Static Mixer with Twisted-leaves[J].Journal of Basic Science and Engineering,2011,19(5):799-809. |
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| Authors: | WU Jianhua MENG Huibo GAO Yanli LIU Zhiqiang YU Yanfang |
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| Institution: | WU Jianhua,MENG Huibo,GAO Yanli,LIU Zhiqiang,YU Yanfang (Research Center of Liaoning Province for Chemical Static-Mixing Reaction Engineering and Technology,School of Mechanical Engineering Shenyang University of Chemical Technology,Shenyang 110142,China) |
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| Abstract: | The instantaneous flow field in static mixer with twisted-leaves with 1.25 in the aspect ratio was measured used the Laser Doppler particle analyzer.The velocity fluctuation signals were multi-scale decomposed by use of Empirical Mode Decomposition(EMD)method.Each scale intrinsic mode function(IMF)and corresponding symbolic time series was obtained.The modified Shannon entropy(Hs)was used to evaluate the microcosmic kinetics characteristics.By analysis the profiles of Hs at different scales,it was found tha... |
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| Keywords: | static mixer empirical mode decomposition intrinsic mode function symbolic analysis Shannon entropy |
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