激光自混合测量矩形管道流速分布及流量

J4 ›› 2016, Vol. 33 ›› Issue (1): 75-80.

激光自混合测量矩形管道流速分布及流量

鲁岸立刘建国桂华侨孙悟程寅余同柱

1中国科学院安徽光学精密机械研究所中国科学院环境光学与技术重点实验室，安徽合肥 230031；
2 安徽省环境光学与技术重点实验室，安徽合肥 230031

收稿日期:2015-02-13 修回日期:2015-04-19 出版日期:2016-01-28 发布日期:2016-01-06
通讯作者: 桂华侨（1979-）安徽潜山人，副研究员，主要从事环境污染光学监测新技术、激光自混合技术方面的研究。 E-mail:hqgui@aiofm.ac.cn。
作者简介:鲁岸立 (1991-)安徽芜湖人，硕士研究生，主要从事激光自混合技术方面的研究。E-mail: allu@aiofm.ac.cn
基金资助:
国家自然科学基金（61275165, 61201401和61307098 ）

Measurement of fluid-velocity profile and flow rate in rectangular duct based on laser-diode self-mixing effect

Lu Anli ，Liu Jianguo ，Gui Huaqiao ，Sun Wu，Cheng Yin，Yu Tongzhu

1 Key Laboratory of Environmental Optics and Technology , Anhui Institute of Optics and Fine Mechanics , Chinese Academy of Sciences , Hefei , Anhui 230031 , China
2 Anhui Key Laboratory of Environmental Optics and Technology, Hefei , Anhui 230031 , China)

Received:2015-02-13 Revised:2015-04-19 Published:2016-01-28 Online:2016-01-06

摘要/Abstract

摘要：

复杂管道条件下的流速分布和流量的准确测量对掌握其流速分布规律及其应用均具有重要的意义。提出了一种激光自混合测量矩形管道流体层流流速分布和流量的方案。在激光自混合和矩形管道层流流速分布理论的基础上，分析了矩形管道内流体层流运动时的激光自混合信号频谱特征，得到了矩形管道层流流速分布特征和流量值。实验测量的矩形管道流速测量值平均相对误差为2.7%，流量值相对误差在2.0%以内，实验结果与理论相一致。

关键词: 激光技术；流速；流量；激光自混合；矩形管道

Abstract:

Accurate measurement of fluid-velocity profile and flow rate in complex duct is important to master the velocity distribution law and its application. A scheme of measuring the fluid-velocity profile and flow rate in rectangular duct based on laser-diode self-mixing effect was proposed. Based on the self-mixing interference theory and velocity distribution of laminar flow in rectangular duct theory, the feature of frequency spectrum of self-mixing signal of laminar flow in rectangular duct was analyzed. The feature of fluid-velocity profile and flow rate in rectangular duct were obtained. The average relative error of measured fluid-velocity is 2.7%. The relative errors of measured flow rate in rectangular duct are less than 2.0%. Experimental measurements accord with the theory.

Key words: laser techniques ; flow velocity ; flow rate ; self-mixing ; rectangular duct

中图分类号:

TP212

鲁岸立刘建国桂华侨孙悟程寅余同柱. 激光自混合测量矩形管道流速分布及流量[J]. J4, 2016, 33(1): 75-80.

Lu Anli ，Liu Jianguo ，Gui Huaqiao ，Sun Wu，Cheng Yin，Yu Tongzhu. Measurement of fluid-velocity profile and flow rate in rectangular duct based on laser-diode self-mixing effect[J]. J4, 2016, 33(1): 75-80.

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