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沸腾两相流动压力波动信号的特性

Characterization of Pressure Fluctuations in Boiling Two-phase Flow
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摘要 研究了竖直管内沸腾两相流动时压力波动信号的特性,对压力波动时间序列进行了标准偏差分析、功率谱密度函数分析、分维数分析、相关维分析及Kolmogorov熵分析,考察了热流密度对压力波动的影响规律.结果表明沸腾两相流动具有非线性混沌特性,且热流密度对各特征参数有不同影响. Experiments are carried out in the paper to study the feature of pressure fluctuating in vertical tube for boiling two-phase flow. The time series of pressure fluctuation were analyzed by means of standard deviation, power spectrum, rescaled range (R/S), correlation dimension and Kolmogoroy entropy analyses. It is shown that heat flux had great influence on these quantitative numbers. In different velocity of flow, the fractal dimension is less than 1.5 under the various heat flux, and positive finite value of the Kolmogorov entropy was found, which means the boiling two-phase flow was nonlinear chaotic.
出处 《河北工业大学学报》 CAS 北大核心 2009年第4期19-23,共5页 Journal of Hebei University of Technology
关键词 沸腾两相流 热流密度 压力波动 分维数 相关维 Kolmogorov熵 boiling two-phase heat flux pressure fluctuation fractal dimension correlation dimension Kolmogorov entropy
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  • 1DiMarco P, Clausse A, Lahey Jr R T. Analysis of nonlinear instabilities in boiling systems [J]. Dynamics and Stability of Systems, 1991, 6 (3): 191-216.
  • 2Kozma R, Kok H, Sakuma M. Characterization of two-phase flows using fi-actal analysis of local temperature fluctuation [J]. International Journal of Multiphase flow, 1996, 22 (5): 953-968.
  • 3Karve, Atul A, Uddin Rizwan, Doming J J. Stability analysis of BWR nuclear-coupled thermal-hydraulics using a simple model [J]. Nuclear Engineering and Design, 1997, 177 (1): 155-177.
  • 4Lee J D, Pan C. Dynamics of multiple parallel boiling channel systems with forced flows [J]. Nuclear Engineering Design, 1999, 192 ( 1 ) : 31-44.
  • 5Cammarata G, Fichera A, Pagano A. Nonlinear analysis of a rectangular natural circulation loop [J]. International Communications in Heat and Mass Transfer, 2000, 27 (8):1077-1089.
  • 6Robert Z, Wilhemus J M. Investigation the nonlinear dynamics of natural-circulation boiling two-phase flows [J]. Nuclear Technology, 2004, 146 (3): 244-256.
  • 7Ming-yan Liu, Juan-ping Xue, Ai-hong Qiang. Chaotic forecasting of time series of heat-transfer coefficient for an evaporator with a two-phase flow [J]. ChemicalEngineering Science, 2005, 60 (3): 883-895.
  • 8李正宇,李青,郭方中.沸腾两相流动中的动力学特征量[J].热科学与技术,2004,3(1):43-46. 被引量:2

二级参考文献1

  • 1孙峰.[D].武汉:华中理工大学,1999.

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