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Updated: Aug 24, 2025

Determining 3D Flow Fields via Multi-camera Light Field Imaging
Published on: March 6, 2013
3D velocity field reconstruction of gas-liquid two-phase flow based on space-time multi-scale binocular-PIV
Hongyi Wang1, Gongcheng Dou2, Hao Zhang2
1Tianjin Key Laboratory of Intelligent Control of Electrical Equipment, School of Artificial Intelligence, Tiangong University, Tianjin, 300387 China.
Abstract:
for particle image velocimetry (PIV) technique, the two-dimensional (2D) PIV by one camera can only obtain 2D velocity field, while three-dimensional (3D) PIV based on tomography by three or four cameras is always complex and expensive. In this work, a binocular-PIV technology based on two cameras was proposed to reconstruct the 3D velocity field of gas-liquid two-phase flow, which is a combination of the binocular stereo vision and cross-correlation based on fast Fourier transform (CC-FFT). The depth of particle was calculated by binocular stereo vision on space scale, and the plane displacement of particles was acquired by CC-FFT on time scale. Experimental results have proved the effectiveness of the proposed method in 3D reconstruction of velocity field for gas-liquid two-phase flow.
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