Laser diode self-mixing technique for liquid velocimetry
Laser diode self-mixing technique for liquid velocimetry
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DOI：
10.1016/j.nima.2015.12.042
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发表时间：
2016-09
影响因子：
1.4
通讯作者：
A. Alexandrova;C. Welsch
中科院分区：
文献类型：
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作者：
A. Alexandrova;C. Welsch
使用自混合技术，或光反馈干涉法，流体速度测量的水接种二氧化钛已被执行使用激光二极管来测量的种子颗粒浓度的影响，也泵的速度的流量。速度计利用市售的激光二极管，内置光电二极管用于检测自混合效应。该设备已证明，对于高达1.5 m/s的液体流速和0.8- 0.03%范围内的散射颗粒浓度，其准确度优于10%。与以前的实验相比，这是一个数量级的改进。建议的速度计是进一步发展的应用在气体射流测量。
Using the self-mixing technique, or optical feedback interferometry, fluid velocity measurements of water seeded with titanium dioxide have been performed using a laser diode to measure the effect of the seeding particle concentration and also the pump speed of the flow. The velocimeter utilises commercially available laser diodes with a built-in photodiode for detection of the self-mixing effect. The device has demonstrated an accuracy better than 10% for liquid flow velocities up to 1.5 m/s with a concentration of scattering particles in the range of 0.8–0.03%. This is an improvement of one order of magnitude compared to previous experiments. The proposed velocimeter is to be developed further for application in gas-jet measurements.