Jamming probability measurement of granular flow in silo based on random walk model

Haitao WANG; Quan CHEN; Ran LI; Wenzheng XIU; Hui YANG

doi:10.3969/j.issn.1005-5630.2022.006.001

Optical Instruments, Volume. 44, Issue 6, 1(2022)

Jamming probability measurement of granular flow in silo based on random walk model

Haitao WANG1... Quan CHEN1, Ran LI2, Wenzheng XIU1 and Hui YANG1,* |Show fewer author(s)

¹School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

²School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

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Fig. 1. Schematic diagram of the experimental system used for calculating the jamming probability of granular flow in a silo

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Fig. 2. Schematic diagram of feature extraction of jamming arch

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Fig. 3. Scatter diagram of jamming probability J and number of experiments N

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Fig. 4. Characteristic diagram of the jamming arch

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Fig. 5. Scatter plot of mass discharge rate and jamming probability

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Table 1. Properties of the granular materials used in this study
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Table 1. Properties of the granular materials used in this study
材料直径/mm 球形度密度/(kg/m³) 体积密度/(kg/m³) 摩擦系数
玻璃 1.85±0.15 0.98±0.01 2500 1500±6.40 0.58

Table 2. Jamming probability of granular flow in silo
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Table 2. Jamming probability of granular flow in silo
参数 n ∈ [4,11] n ∈ [12,16] n ∈ [4,16]
理论堵塞概率J₁ 7.7% 20.1% 27.8%
实验堵塞概率J₂ — — 8%

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Haitao WANG, Quan CHEN, Ran LI, Wenzheng XIU, Hui YANG. Jamming probability measurement of granular flow in silo based on random walk model[J]. Optical Instruments, 2022, 44(6): 1

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