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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This work has been supported by the National Natural Science Foundation of China (Nos.51806150 and 61905178), the Program for the Research Project of Tianjin Municipal Education Committee (No.2019KJ020), and the Science and Technology Guiding Project of China Textile Industry Federation (No.2018086).
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Wang, H., Dou, G., Zhang, H. et al. 3D velocity field reconstruction of gas-liquid two-phase flow based on space-time multi-scale binocular-PIV technology. Optoelectron. Lett. 18, 613–617 (2022). https://doi.org/10.1007/s11801-022-2007-8
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DOI: https://doi.org/10.1007/s11801-022-2007-8