| 气固喷动床压力波动的Hurst分析 |
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| 引用本文： | 朱兰瑾,林诚. 气固喷动床压力波动的Hurst分析[J]. 福州大学学报(自然科学版), 2003, 31(2): 247-252 |
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| 作者姓名： | 朱兰瑾 林诚 |
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| 作者单位： | 福州大学化学化工学院,福建,福州,350002 |
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| 基金项目： | 福建省科技三项基金资助项目 (K0 2 0 17) |
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| 摘 要： | 采用Hurst分析描述了不同喷动气速下气固喷动床中的压力波动行为 .发现压力波动信号中存在着不同程度的周期成分 .根据计算所得的Hurst系数H值随喷动气速增大而变化的曲线 ,可将颗粒床层的流动状态划分为 3个流域 :低气速时的不稳定流化、稳定喷动和高喷动气速下的不稳定喷动 .
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| 关 键 词： | 喷动床 压力波动 Hurst分析 周期成分 流动状态 |
| 文章编号： | 1000-2243(2003)02-0247-06 |
| 修稿时间： | 2002-09-28 |
Hurst''s analysis of pressure fluctuation in gas - solid spouted beds |
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| ZHU Lan-jin,LIN Cheng. Hurst''s analysis of pressure fluctuation in gas - solid spouted beds[J]. Journal of Fuzhou University(Natural Science Edition), 2003, 31(2): 247-252 |
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| Authors: | ZHU Lan-jin LIN Cheng |
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| Affiliation: | (College of Chemistry and Chemical Engineering , Fuzhou University, Fuzhou, Fujian 350002, China) |
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| Abstract: | The behavior of pressure fluctuation in a gas-solid spouted bed with different spouting gas velocity is described by means of Hurst's analysis. Periodic component is found in the pressure fluctuation signal. According to the relation of Hurst exponent to gas velocities, the gas-solid flow can be divided into three regimes: unstable fluidization at low gas velocity, stable spouting at medium velocity and unstable spouting at high gas velocity. |
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| Keywords: | spouted beds pressure fluctuation Hurst' analysis periodic component flow regimes |
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