High-resolution velocimetry technique based on the decaying streaks of phosphor particles

Fan Luming; Vena Patrizio; Savard Bruno; Xuan Guangtao; Fond Benoit

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High-resolution velocimetry technique based on the decaying streaks of phosphor particles

机译：基于磷光体粒子腐烂条纹的高分辨率测速技术

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This Letter introduces a new, to the best of our knowledge, particle streak velocimetry technique based on decaying streaks formed by individual phosphor particles following pulsed excitation. Tin-doped phosphor particles are dispersed into flows and excited by a pulsed UV laser light sheet. Emission streaks are recorded as a result of particle motion during the persistence of luminescence (here similar to 27 mu s). The two components of the flow velocity are derived from the streaks without directional ambiguity by applying to each streak a two-dimensional fit describing a linearly moving point source with a mono-exponential decaying emission. This technique can achieve high spatial resolution compared to particle image velocimetry (PIV), while also requiring much fewer computational resources than particle tracking velocimetry (PTV) at high seeding densities. The wavelength-shifted luminescence also allows rejection of reflected laser light. The approach was validated in a free jet against simultaneous PTV and PIV and then successfully applied to measure a canonical boundary layer flow. (C) 2021 Optical Society of America

机译：据我们所知，这封信介绍了一种新的粒子条纹测速技术，该技术基于单个荧光粉粒子在脉冲激发后形成的衰减条纹。掺锡磷光体颗粒分散成流，并由脉冲紫外激光光片激发。发射条纹是发光持续期间粒子运动的结果（此处类似于27μs）。通过对每个条纹应用二维拟合（描述具有单指数衰减发射的线性移动点源），从没有方向模糊的条纹中导出流速的两个分量。与粒子图像测速技术（PIV）相比，该技术可以获得更高的空间分辨率，同时在高种子密度下比粒子跟踪测速技术（PTV）需要更少的计算资源。波长偏移的发光还可以抑制反射的激光。该方法在自由射流中通过PTV和PIV同时测量得到验证，并成功地应用于标准边界层流动的测量。（2021）美国光学学会

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《Optics Letters》 |2021年第3期|共4页
作者
Fan Luming; Vena Patrizio; Savard Bruno; Xuan Guangtao; Fond Benoit;
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Otto von Guericke Univ Inst Fluid Mech &

Thermodynam D-39106 Magdeburg Germany;

Natl Res Council Canada Aerosp Res Ctr Ottawa ON K1A 0R6 Canada;

Univ Ottawa Dept Mech Engn Ottawa ON K1N 6N5 Canada;

Otto von Guericke Univ Inst Fluid Mech &

Thermodynam D-39106 Magdeburg Germany;

Otto von Guericke Univ Inst Fluid Mech &

Thermodynam D-39106 Magdeburg Germany;

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正文语种 eng
中图分类计量学;光学;
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2. Echo particle image velocimetry technique and its applications [J] . ZHENG Hairong, QIAN Ming, LING Tao, 声学学报：英文版 . 2011,第002期
3. A Laboratory Modeling of the Velocity Field in the Convective Boundary Layer with the Particle Image Velocimetry Technique [J] . 李萍阳, 蒋维楣, 孙鉴泞, 大气科学进展：英文版 . 2003,第004期
4. High-resolution velocimetry from tracer particle fields using a wavelet-based optical flow method [J] . Schmidt B. E., Sutton J. A. Experiments in Fluids: Experimental Methods and Their Applications to Fluid Flow . 2019,第3期

机译：使用基于小波的光学流量法从示踪剂粒子场的高分辨率测量仪
5. Comparison of Three Particle Based Velocimetry Techniques [J] . Z. Wang, D. Wang, Y. Liu Transactions of the American nuclear society . 2017,第期

机译：三种基于粒子的测速技术的比较
6. Light-field camera-based 3D volumetric particle image velocimetry with dense ray tracing reconstruction technique [J] . Shi Shengxian, Ding Junfei, New T. H., Experiments in Fluids: Experimental Methods and Their Applications to Fluid Flow . 2017,第7期

机译：基于光场相机的3D容量粒子图像测速功能，具有密集射线跟踪重建技术
7. High-Resolution Velocimetry from Tracer Particle Fields Using Wavelet-based Optical Flow [C] . B. E. Schmidt, J. A. Sutton AIAA aerospace sciences meeting;AIAA SciTech forum . 2018

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8. An evanescent-wave based particle image velocimetry technique. [D] . Li, Haifeng. 2008

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9. Particle streak velocimetry-optical coherence tomography: a novel method for multidimensional imaging of microscale fluid flows: erratum [O] . Kevin C. Zhou, Brendan K. Huang, Ute A. Gamm, 2016

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10. Video-Based Particle Tracking Velocimetry Technique for Measuring Flow Velocity in Porous Media (HES 48) [O] . Dill Anthony J., Garcia Marcelo H., Valocchi Albert J. 1995

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11. Particle Streak Velocimetry of Supersonic Nozzle Flows. [R] . Willits, J. D., Pourpoint, T. L. 2016

机译：超音速喷管流动的粒子条纹测速。

High-resolution velocimetry technique based on the decaying streaks of phosphor particles

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