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Proceedings Paper

Two dimension interferometric Rayleigh scattering velocimetry
Author(s): Sheng Wang; Jin-hai Si; Jun Shao; Zhi-yun Hu
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Paper Abstract

In order to obtain the velocity with high dependability at extreme combustion condition, a 2-D interferometric Rayleigh scattering (IRS) velocimetry based on detecting the Doppler frequency shift of molecular scattering with Fabry–Perot etalon was developed. The 2-D IRS measurement system was set up with a multi-beam probe laser, aspherical lens collection optics, and a solid Fabry-Perot etalon. A multi-beam probe laser with 0.5mm intervals was formed by collimating a laser sheet passing through a cylindrical microlens arrays. The aspherical lens was used to enhance the intensity of Rayleigh scattering signal. The 2-D velocity results of a Mach 1.5 air flow were obtained. The velocity in the flow center is about 450 m/s. The reconstructed results are in accordance with the characteristic of flow, which indicates the validity of this technique.

Paper Details

Date Published: 19 October 2016
PDF: 7 pages
Proc. SPIE 10153, Advanced Laser Manufacturing Technology, 101530F (19 October 2016); doi: 10.1117/12.2244791
Show Author Affiliations
Sheng Wang, Xi’an Jiaotong Univ. (China)
Jin-hai Si, Xi'an Jiaotong Univ. (China)
Jun Shao, Northwest Institute of Nuclear Technology (China)
Zhi-yun Hu, Northwest Institute of Nuclear Technology (China)

Published in SPIE Proceedings Vol. 10153:
Advanced Laser Manufacturing Technology
Bingheng Lu; Huaming Wang, Editor(s)

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