Reconstruction of three-dimensional velocity vector maps from two-dimensional PIV data

22nd Fluid Mechanics Conference

物理学;力学

Pavlik, D.^1 ; Procházka, P.^2 ; Kopecký, V.^1

Institute of New Technologies, Technical University of Liberec, Czech Republic^1

Liberec, Czech Republic Institute of Termomechanics, Academy of Sciences of the Czech Republic, Czech Republic^2

关键词: 2-D vector maps;    Calibration patterns;    Commercial software;    Intrinsic and extrinsic parameters;    Three-dimensional reconstruction;    Three-dimensional velocity;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/760/1/012020/pdf
DOI  :  10.1088/1742-6596/760/1/012020

学科分类：力学，机械学

来源: IOP

【 摘 要 】

In this paper a three-dimensional reconstruction of flow field in a tunnel with the Hump profile is presented. The reconstruction is always performed for pair of 2D vector maps obtained by 3D PIV with two cameras which record measurement area from different locations. Three-dimensional reconstruction can be obtained in various ways. This paper summarizes two: the reconstruction based on the known correspondence between images, and the reconstruction based on the knowledge of intrinsic and extrinsic parameters of cameras. The both methods can be used in the cases when it is impossible to use a calibration pattern or when reconstruction by commercial software fails.