信号分析技术在海洋条件下并联双通道两相流不稳定性研究中的应用

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基金项目:

中央高校基本科研业务费专项资金(HEUCFZ1023)

哈尔滨大学基础研究基金(HEUFT08013)

Application of Signal Analysis in Instability of Parallel Twin-Channel System under Ocean Conditions

College of Nuclear Science and Technology, Harbin Engineering University, Harbin, China, 150001, China

摘要: 海洋条件下具有并联通道的两相流动系统有可能出现非常严重的并联流道不稳定性,这种不稳定性取决于每个通道的固有特性和工作条件。海洋条件对并联通道不稳定性有十分严重的影响,其流量振荡曲线非常复杂。本文利用快速傅立叶变换方法(FFT)对不同海洋条件下的流量振荡曲线进行分解,得到了系统的基本运行工况和固有特性。研究表明,可以利用该方法得到海洋条件对并联通道不稳定性的精确影响。
- 两相流动 /
- 不稳定性 /
- 信号分析 /
- 并联通道
Abstract: Parallel-channel two-phase flow systems under ocean conditions suffer from very serious parallel-channel instability,depending on the inherent characteristics of each channel and operating conditions.The influences of ocean conditions on the instability of parallel channel are very intensive.The trajectory of mass flow is very complex.The traditional methods cannot analyze such curves effectively.In this paper,Fast Fourier Transformation（FFT） method is used to analyze the complex curve of mass flow.Based on this method the oscillation curve can be decomposed.Some basic motions and inherent characteristics can be shown by the decomposition.The accurate analysis of the influence of ocean conditions is achievable.The onset of inherent parallel-channel instability is also analyzed.
- Two-phase flow /
- Instability /
- Signal Analysis /
- Parallel channel