Junzhe Xiong, Ming Kong, Bo Hong, Feiyang Shi, Juan Jian, Honghui Zhan, Liang Shan. Particle Image Velocimetry Using Cross‑Correlation Optical Flow Algorithm Based on Radial Basis Function Interpolation[J]. Chinese Journal of Lasers, 2023, 50(6): 0604001
- Chinese Journal of Lasers
- Vol. 50, Issue 6, 0604001 (2023)
Fig. 1. Schematic of PIV system
Fig. 2. Basic flow of G-hybrid method
Fig. 3. Reconstructed velocity fields in Rankine vortex simulation experiment. (a) True velocity field; (b) reconstructed result by Hybrid method 2020;(c) reconstructed result by G-hybrid method;(d) local amplification of velocity field
Fig. 4. Schematic of angular error of synthesized velocity vector
Fig. 5. Angular error distributions in Rankine vortex reconstruction. (a) Hybrid method 2020; (b) G-hybrid method
Fig. 6. Influence of displacement on accuracy. (a) RMSE; (b) AAE
Fig. 7. Influence of particle size on reconstruction error. (a) RMSE; (b) AAE
Fig. 8. Experimental platform for PIV measurement
Fig. 9. Particle images collected at different moments in rotation experiment. (a) t1；(b) t2
Fig. 10. Estimated velocity fields in rotation experiment. (a) Hybrid method 2020; (b) G-hybrid method
Fig. 11. Particle images collected at different moments in water injection experiment.(a) t1；(b) t2
Fig. 12. Estimated velocity fields in water injection experiment. (a) Hybrid method 2020; (b) G-hybrid method
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Table 1. Reconstructed precision
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