An improved high accuracy PTV algorithm for pebble flow

Liu, Yujia; Peng, Sifan; Gui, Nan; Yang, Xingtuan; Tu, Jiyuan; Jiang, Shengyao

doi:10.1016/j.powtec.2021.04.025

Cited by 11 publications

(5 citation statements)

References 49 publications

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“…In Liu et al.’s work, the published three-point cocircle and the LP polygon algorithm were used for the amending method. This proved to be an effective method to improve the accuracy of particle tracking for the whole process of discharging Figure d,e shows the failed amending by the method of the three-point cocircle and the successful amending by the method of the L–P polygon.…”

Section: Programs For Experimental Data Processingmentioning

confidence: 94%

“…This proved to be an effective method to improve the accuracy of particle tracking for the whole process of discharging. 49 Figure 5d,e shows the failed amending by the method of the three-point cocircle and the successful amending by the method of the L−P polygon. Note that R p represents the radius of particles.…”

Section: Particlementioning

confidence: 99%

“…The data processing mainly includes the particle recognition of each frame and the particle tracking with amending between different frames. The algorithm is adapted from the literature, , and a detailed illustration can be found in a previously accepted paper . Thus, we give a brief introduction hereinafter for particle recognition and particle matching with amending.…”

Section: Programs For Experimental Data Processingmentioning

confidence: 99%

“…Schematic diagram of particle tracking with particle amending: (a) target particle “ i ” and surrounding particles at the current frame, (b) target particle “ i ” and surrounding particles at the next frame, (c) unrecognized particles at the next frame, (d) failed to amend the method of the three-point cocircle, and (e) successful amending with the method of the L–P polygon. , …”

Section: Programs For Experimental Data Processingmentioning

confidence: 99%

See 3 more Smart Citations

Solid-Flow Pattern for Free Drainage in MPBAC Based on Whole-Field Residence Time Distribution

Liu

Peng

et al. 2022

Ind. Eng. Chem. Res.

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The solid-flow pattern of free drainage is important to the design of a silo and prediction of the discharge rate of granular systems, and the flow pattern in the monolayer pebble bed formed in the two-dimensional (2D) silo reveals the rules of solidflow pattern in a three-dimensional (3D) silo. The whole-field PTV platform here contains a monolayer pebble bed with adjustable configurations (MPBAC) and corresponding programs for particle recognition, amending, and matching. Using this platform, all particles in the beds are traced in the whole process of free drainage. The average mass flow rate and the whole-field residence time distribution (RTD) are obtained at different outlets. The effects of outlet size, inclination angle, and outlet configurations on the average mass flow rate and the solid-flow patterns are analyzed and discussed. In the free-discharge experiment of MPBAC, the effect of inclination angle on the solid-flow pattern is more significant than that of outlet size. The particle flow is more likely to be the funnel pattern when the "circular-arc-type" and the "cycloid-type" outlets are adopted. The final solid-flow pattern under different conditions (different outlet sizes and configurations and different inclination angles) provides a useful reference for future prediction of free discharge in a 2D silo with similar dimensions and configurations.

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Section: Programs For Experimental Data Processingmentioning

confidence: 94%

Section: Particlementioning

confidence: 99%

Section: Programs For Experimental Data Processingmentioning

confidence: 99%

Section: Programs For Experimental Data Processingmentioning

confidence: 99%

See 2 more Smart Citations

Solid-Flow Pattern for Free Drainage in MPBAC Based on Whole-Field Residence Time Distribution

Liu

Peng

et al. 2022

Ind. Eng. Chem. Res.

Self Cite

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“…If the center of a particle in the second frame image is within the radius of a particle in the first frame image, they are considered one particle. Therefore, the inter-frame time shall be short enough so that the displacement of a particle in two successive frame images is not larger than the particle radius [40]. The allowable maximum particle velocity shall be 2 m•s −1 according to the frame rate of 2000 FPS and the particle radius of 1 mm, which is larger than the actual maximum particle velocity of about 0.7 m•s −1 in this experiment, so accurate matching can be guaranteed.…”

Section: Particle Tracking Velocimetrymentioning

confidence: 99%

Study on Residence Time Distribution of Particles in a Quasi-Two-Dimensional Batch Discharge Silo Using the Multi-Simulation Averaging Method

Zhu,

Xu,

Zheng

et al. 2023

Processes

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As the primary carrier for storing and transporting particles, the silo is widely used in the production process. The RTD is a promising method for studying the silo discharge process and has not been studied enough. This paper presents a study on the residence time distribution (RTD) and flow pattern of particles in a two-dimensional flat-bottom batch discharge silo under gravity using experiments and the discrete element method (DEM). Meanwhile, a multi-simulation averaging method is proposed to eliminate local fluctuations in the residence time. The results are as follows. The mean flow rate is 16.85 g·s−1 in simulations, which is only 2.7% larger than the experimental value. In the central area of the silo, the residence time contour lines take on elliptical shapes and the trajectories of particles are straight lines. The particles are distributed along the elliptical residence time contour lines all the time during the discharge process until they flow out of the silo. The particles near the side wall of the silo swiftly flow with a constant acceleration to the central line of the silo along the upper horizontal surface, which has become avalanche slopes, and then flow down the outlet together with the particles in the radial flow region. In this study, an elliptical distribution law during the silo discharge process was funded for the first time. An improved radial flow model was proposed with a higher accuracy and clearer physical meaning, which will be helpful in silo design and scaling up in industrial applications.

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Cluster-based particle tracking velocimetry algorithm combining the quasi-parallel correction in granular motions reconstruction

Guan,

Zhang,

Lin

et al. 2024

Granular Matter

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An improved high accuracy PTV algorithm for pebble flow

Cited by 11 publications

References 49 publications

Solid-Flow Pattern for Free Drainage in MPBAC Based on Whole-Field Residence Time Distribution

Solid-Flow Pattern for Free Drainage in MPBAC Based on Whole-Field Residence Time Distribution

Study on Residence Time Distribution of Particles in a Quasi-Two-Dimensional Batch Discharge Silo Using the Multi-Simulation Averaging Method

Cluster-based particle tracking velocimetry algorithm combining the quasi-parallel correction in granular motions reconstruction

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