| 空气水两相流压力波动现象非线性分析 |
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| 引用本文： | 白博峰,郭烈锦,陈学俊.空气水两相流压力波动现象非线性分析[J].工程热物理学报,2001,22(3):359-362. |
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| 作者姓名： | 白博峰 郭烈锦 陈学俊 |
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| 作者单位： | 西安交通大学动力工程多相流国家重点实验室!陕西西安 710049，西安交通大学动力工程多相流国家重点实验室!陕西西安 710049，西安交通大学动力工程多相流国家重点实验室!陕西西安 710049 |
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| 基金项目： | 国家自然科学基金资助项目（No．59995460－2） |
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| 摘 要： | 确定性混沌理论能够深刻揭示气液两相流压力波动的非线性特征。本文研究了确定性混沌不变量－分维数、关联维数、Ｋｏｌｍｏｇｏｒｏｖ 熵在不同流型的变化以及折算液速的影响规律。实验结果表明压力波动的混沌特性与流型有关，分维数除了在高气速的环状流，在其它流型内都小于１．５，折算液速的大小强烈影响压力波动的混沌特性。
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| 关 键 词： | 两相流 非线性 压力 波动 |
| 文章编号： | 0253-231(2001)03-0359-04 |
| 修稿时间： | 2000年12月16 |
NONLINEAR ANALYSIS ON PRESSURE FLUCTUATION PHENOMENA OF AIR-WATER TWO-PHASE FLOW |
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| BAI Bo-Feng GUO Lie-Jin CHEN Xue-Jun.NONLINEAR ANALYSIS ON PRESSURE FLUCTUATION PHENOMENA OF AIR-WATER TWO-PHASE FLOW[J].Journal of Engineering Thermophysics,2001,22(3):359-362. |
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| Authors: | BAI Bo-Feng GUO Lie-Jin CHEN Xue-Jun |
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| Abstract: | The nonlinear characteristics of pressure fluctuation for two-phase flow in vertical upward section of U-type tube were investigated by means of deterministic chaotic theory. The fractal dimension, correlation dimension and Kolmogorv entropy in different flow regimes were obtained and the influence of liquid velocity on the parameters were also analyzed. The results show that the chaotic features have close relationship with different flow regimes. The fractal dimensions are less than 1.5 in flow regimes beside annular flow with great gas velocity. The liquid superficial velocity has considerable affection on the chaotic features. |
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| Keywords: | two-phase flow nonlinear pressure fluctuation |
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