| 气固流化床压力脉动信号的混沌特征分析 |
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| 引用本文： | 黄轶伦,陈伯川,郑燕萍,张卫东. 气固流化床压力脉动信号的混沌特征分析[J]. 化学反应工程与工艺, 2000, 16(4): 357-362 |
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| 作者姓名： | 黄轶伦 陈伯川 郑燕萍 张卫东 |
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| 作者单位： | 浙江大学仪器系,浙江,杭州,310027 |
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| 基金项目： | 浙江省自然科学基金，697026， |
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| 摘 要： | 对气固流化床内压力脉动时间序列进行分析，研究了流化床内的混沌特性，分别利用李雅普诺夫指数、相对分散度、分形维数和混沌度来定量描述稳定性、复杂性，自由度和系统状态数，证明四个混沌特征参数的相关性是好的，得到了混沌特性随着气速和床层高度的变化趋势，并且提出气泡行为是流化床内产生混沌运动的重要原因。
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| 关 键 词： | 气固流化床 混沌特征 压力脉动信号 气固两相流 |
| 修稿时间： | 1999-07-06 |
ANALYSIS OF CHAOTIC CHARACTERISTICS FOR PRESSURE FLUCTUATION SIGNALS IN GAS-SOLID FLUIDIZED BEDS |
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| HUANG Yi-lun,CHEN Bo-chuan,ZHENG Yan-ping,ZHANG Wei-dong. ANALYSIS OF CHAOTIC CHARACTERISTICS FOR PRESSURE FLUCTUATION SIGNALS IN GAS-SOLID FLUIDIZED BEDS[J]. Chemical Reaction Engineering and Technology, 2000, 16(4): 357-362 |
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| Authors: | HUANG Yi-lun CHEN Bo-chuan ZHENG Yan-ping ZHANG Wei-dong |
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| Abstract: | Chaotic characteristics of fluidized beds were analyzed using time series ofpre ssure fluctuation in gas-solid fluidized beds by this study. Lyapunov exponent,relative dispersion, fractal dimension and chaos count were adopted to measure thestability, complexity, degree of freedom and state of the system accordingly . It was alsotested that these four chaotic parameters have prominent correlati vity. The trends ofchaotic characteristics changing with the gas velocity and the bed height were deferimendin defeil. It concluded that the bubble behavior is the dominant cause of chaos in thefluidized bed. |
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| Keywords: | gas-solid fluidized bed pressur efluctuation chaotic characteristics |
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