Archive > Volume 18 Issue 10 > 2022,18(10):613-617. DOI:https://doi.org/10.1007/s11801-022-2007-8 CSTR:[cstr] Prev Next
3D velocity field reconstruction of gas-liquid two-phase flow based on space-time multi-scale binocular-PIV technology
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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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