A volumetric particle image velocimetry technique based on single color camera with trichromatic mask  

作　　者：Yong ZHANG Junfei DING Xiaoyi LIANG H.D.LIM 

机构地区：[1]College of Aeronautics and Astronautics,Taiyuan University of Technology,Jinzhong 030600,China [2]School of Civil,Aerospace and Design Engineering,University of Bristol,BS81TR,United Kingdom

出　　处：《Chinese Journal of Aeronautics》2024年第11期217-231,共15页中国航空学报（英文版）

基　　金：co-supported by the National Natural Science Foundation of China(Nos.12102284,12172242,12332017);the Shanxi Province Science Foundation for Youths,China(No.20210302124262);the Chunhui Project Foundation of the Education Department of China(No.202200257)。

摘　　要：A novel single color camera trichromatic mask 3D-PIV technique suitable for measurement of complex flow fields in confined spaces is presented in this paper.By using a trichromatic mask to modulate the imaging optical path of a color camera,the RGB(Red,Green,and Blue)channels of the photosensitive chip were used to record full-frame full-resolution images of tracer particles from three viewing angles.The MLOS-SMART particle reconstruction algorithm was used to obtain three-dimensional particle distribution matrix from particle trichromatic mask images.The impact of parameters such as the inter-hole spacing and hole diameter of the trichromatic mask on the quality of particle reconstruction was analyzed.Through numerical simulation experiments on artificially synthesized three-dimensional flow fields of Gaussian vortex rings,the practicality of this technique in measuring three-dimensional transient velocity fields and the accuracy of velocity measurements were examined.The accuracy and feasibility of the technique are illustrated based on experimental measurements of a zero-net-mass-flux jet.

关 键 词：Trichromatic mask PIV Volumetric PIV Single color camera PIV Trichromatic mask imaging 3D particle reconstruction 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程] V411