摘要
两相流的辨识技术较为困难。用热膜测速仪测量得到气液两相流信号,提出用子波分析的方法从气液两相湍流瞬时脉动速度信号中识别气泡结构的条件采样方法。利用子波能谱分析的能量最大准则,得到了一种用子波分析自动识别气液两相流中气液两相的新方法,该方法避免了人为确定阈值对经验的依赖性。
The technology to discriminate two phase flows is comparatively difficult, Gas-liquid two-phase flow signals have been finely measured by constant-temperature hot-film anemometer. The paper introduces a new conditional sampling method using wavelet analysis to discriminate the bubbly flow structure in the instantaneous fluctuation velocity signal from gas-liquid two-phase turbulent flow. With the use of energy maxima criterion, a new method of automatic discriminating the bubbly flow structure in gas-liquid two-phase flow is developed. This method has prevented the dependence on experience in case of man-made confirmation of the threshold value.
出处
《黑龙江科技学院学报》
CAS
2005年第2期99-101,共3页
Journal of Heilongjiang Institute of Science and Technology
基金
黑龙江省科技攻关项目(GC04A516)
关键词
气液两相流
子波分析
识别
signals of gas-liquid two-phase flow
wavelet analysis
discriminating
