Simultaneous 3D temperature and velocity field measurements of micro-flow with laser-induced fluorescence and micro-digital holographic particle tracking velocimetry: Numerical study

Longchao Yao; Xuecheng Wu; Jing Yang; Yingchun Wu; Xiang Gao; Linghong Chen; Gérard Gréhan; Kefa Cen

doi:10.3788/COL201513.072801

Chinese Optics Letters, Volume. 13, Issue 7, 072801(2015)

Simultaneous 3D temperature and velocity field measurements of micro-flow with laser-induced fluorescence and micro-digital holographic particle tracking velocimetry: Numerical study

Longchao Yao¹, Xuecheng Wu^1、*, Jing Yang¹, Yingchun Wu^1,2, Xiang Gao¹, Linghong Chen¹, Gérard Gréhan², and Kefa Cen¹

Author Affiliations

¹State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China

²UMR 6614/CORIA, CNRS, Normandie Université, BP12 76801 Saint Etienne du Rouvray, France

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Figures & Tables(8)

Fig. 1. Integrated two-color LIF and micro-DHPTV system.

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Fig. 2. Defocused fluorescent particle: (a) experimental images, calibrated magnification of 15.1; (b) simulated images; (c) intensity distribution at z=−40 μm; (d) intensity distribution at z=30 μm. Each image is 106 pixels×106 pixels, 6.45 μm/pixel at the imaging plane.

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Fig. 3. Simulation images of 30 tracer particles: (a) fluorescence image of RhB; (b) fluorescence image of SRh101; (c) hologram of the first frame; (d) hologram of the second frame.

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Fig. 4. Particle position and displacement errors: (a) position error; (b) displacement error.

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Fig. 5. Intensity ratio at different z positions.

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Fig. 6. Velocity distribution and temperature distribution of the flow field: (a) velocity distribution; (b) temperature distribution.

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Fig. 7. Visualization of 3D temperature and velocity field.

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Table 1. Parameters of the Numerical Test

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Table 1. Parameters of the Numerical Test

Item	Description	Parameter
Velocity	$u_{x} = \frac{u_{0}}{r_{0}^{2}} (r_{0}^{2} - y^{2} - z^{2})$	$u_{0} = 0.07 m / s$ $r_{0} = 75 μm$ $Δ t = 100 μs$
Temperature	$T = T_{0} + a \frac{x}{x_{0}}$	$T_{0} = 40 ° C$ $x_{0} = 60 μm$ $a = 1 / 3$
Dye 1	RhB	Temperature sensitivity 1.5%/°C^[7]
Dye 2	SRh101	Temperature sensitivity 0.17%/°C^[7]

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Longchao Yao, Xuecheng Wu, Jing Yang, Yingchun Wu, Xiang Gao, Linghong Chen, Gérard Gréhan, Kefa Cen. Simultaneous 3D temperature and velocity field measurements of micro-flow with laser-induced fluorescence and micro-digital holographic particle tracking velocimetry: Numerical study[J]. Chinese Optics Letters, 2015, 13(7): 072801

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Paper Information

Category: Remote Sensing and Sensors

Received: Jan. 28, 2015

Accepted: May. 15, 2015

Published Online: Sep. 14, 2018

The Author Email: Xuecheng Wu (wuxch@zju.edu.cn)

DOI:10.3788/COL201513.072801

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology