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| 基于子波分析的气液两相流中相的识别 | |
| 引用本文： | 陈文义,常跃峰,姜楠,邢贺平.基于子波分析的气液两相流中相的识别[J].黑龙江科技学院学报,2005,15(2):99-101. |
| 作者姓名： | 陈文义 常跃峰 姜楠 邢贺平 |
| 作者单位： | 1. 黑龙江科技学院,资源与环境工程学院,哈尔滨,150027;天津大学,力学系,天津,300072 2. 山东工商学院,山东,烟台,260005;天津大学,力学系,天津,300072 3. 天津大学,力学系,天津,300072 4. 哈尔滨煤矿机械研究所,哈尔滨,150036 |
| 基金项目： | 黑龙江省科技攻关项目(GC04A516) |
| 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阂值对经验的依赖性。 |
| 关 键 词： | 气液两相流 子波分析 识别 |
| 文章编号： | 1671-0118(2005)02-0099-03 |
Discriminating phase in gas-liquid flow based on wavelet analysis |
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| CHEN Wenyi,CHANG Yuefeng,JIANG Nan,XING Heping.Discriminating phase in gas-liquid flow based on wavelet analysis[J].Journal of Heilongjiang Institute of Science and Technology,2005,15(2):99-101. | |
| Authors: | CHEN Wenyi CHANG Yuefeng JIANG Nan XING Heping |
| Institution: | CHEN Wenyi 1,3,CHANG Yuefeng 2,3,JIANG Nan3,XING Heping4 |
| Abstract: | 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. |
| Keywords: | signals of gas-liquid two-phase flow wavelet analysis discriminating |
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