Design of a High Uniformity Laser Sheet Optical System for Particle Image Velocimetry

Author:

Yin Kewei,Zhang Jun,Chen Shuang

Abstract

Particle image velocimetry (PIV) is a non-contact, instantaneous and full-flow velocity measurement method based on cross-correlation analysis of particle image. It is widely used in fluid mechanics and aerodynamics. Laser sheet optical system is one of the key equipment of PIV, and it is an important guarantee to obtain high definition particle image. In the PIV measurement task of large low speed wind tunnel, in order to solve the problem of sheet light illumination uniformity of large size model and take into account the requirements of PIV technology on the thickness of the sheet light, a hybrid algorithm is used to design a high uniformity laser sheet optical system based on the theory of physical optics. The simulation results show that the size of the sheet light is 400 mm × 1 mm, the diffraction efficiency reaches 97.77%, and the non-uniformity is only 0.03%. It is helpful to acquire high-resolution images of particles in the full field of view. It also can be applied to a series of non-contact flow field measurement techniques such as plane laser induced fluorescence, filtered Rayleigh scattering and two-color plane laser induced fluorescence temperature measurement.

Funder

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

Aerospace Engineering

Reference17 articles.

1. Scattering particle characteristics and their effect on pulsed laser measurements of fluid flow: speckle velocimetry vs particle image velocimetry

2. A study by holographic velocimetry of the behaviour of free small particles in a flow

3. Stereoscopic particle image velocimetry measurements of the flow around a surface-mounted block

4. TR-PIV Measurement Technology Using Continuous Laser Illumination;Yu;J. Shanghai Jiaotong Univ.,2009

5. Tomographic PIV experimental investigation of topological modes of modulated Reynolds stress and velocity strain rate for coherent structure;Jia;J. Exp. Fluid Mech.,2012

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