| 垂直上升管内空气-水两相流压差波动信号的Hurst指数分析 |
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| 引用本文： | 关跃波,周云龙,孙斌. 垂直上升管内空气-水两相流压差波动信号的Hurst指数分析[J]. 东北电力学院学报, 2005, 25(6): 14-17 |
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| 作者姓名： | 关跃波 周云龙 孙斌 |
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| 作者单位： | 东北电力学院动力系,吉林,吉林,132012;东北电力学院动力系,吉林,吉林,132012;东北电力学院动力系,吉林,吉林,132012 |
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| 摘 要： | 对垂直上升管内空气-水两相流的压差信号进行测量，得到了反映两相流波动特性的压差波动信号。采用Hurst分析描述了管内气液两相流不同流型的压差波动特征，发现压差波动信号中存在着不同程度的周期成分。通过对不同流型的压差波动信号的Hurst指数H进行计算，发现不同流型的H值有很大差别，可根据Hurst指数H值的大小来识别流型，为流型识别提供了一种新的有效方法。
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| 关 键 词： | 气液两相流 压差波动 Hurst分析 流型 |
| 文章编号： | 1005-2992（2005）06-0014-04 |
| 收稿时间： | 2005-10-24 |
| 修稿时间： | 2005-10-24 |
Hurst's Analysis for Differential Pressure Fluctuation signal of Gas - Liquid Two - Phase Flow in Vertical Upward Tube |
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| GUAN Yue-bo,ZHOU Yun-long,SUN Bin. Hurst's Analysis for Differential Pressure Fluctuation signal of Gas - Liquid Two - Phase Flow in Vertical Upward Tube[J]. Journal of Northeast China Institute of Electric Power Engineering, 2005, 25(6): 14-17 |
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| Authors: | GUAN Yue-bo ZHOU Yun-long SUN Bin |
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| Affiliation: | Department of Thermal Power, Northeast China Institute of Electric Power Engineering,Jilin 132012, China |
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| Abstract: | In order to overcome the shortcoming of traditional methods, the differential pressure fluctuation signals of gas-liquid two-phase in vertical up ward tube were obtained and the characters of the signals were described by means of Hurst's analysis. The result showed the periodic component was found in the differential pressure fluctuation signal. By calculating the Hurst exponents of signals of different flow pattern, the distinct difference of Hurst exponents among various flow patterns can be obtained. Therefore flow patterns can be identified by Hurst exponents,and a new efficient method is propoced to choose for flow pattern i-dentification. |
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| Keywords: | Gas-liquid two-phase flow Differential pressure fluctuation Hurst' analysis Flow pattern |
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