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- W3100621867 abstract "We conducted simple experiment and numerical simulation of two-dimensional granular discharge flow driven by gravity under the influence of an obstacle. According to the previous work (Zuriguel {it et al.,,Phys.,Rev.,Lett.},{bf 107}: 278001, 2011), the clogging of granular discharge flow can be suppressed by putting a circular obstacle at a proper position. In order to investigate the details of obstacle effect in granular flow, we focused on particle dynamics in this study. From the experimental and numerical data, we found that the obstacle remarkably affects the horizontal-velocity distribution and packing fraction at the vicinity of the exit. In addition to the circular obstacle, we utilized triangular, inverted-triangular, and horizontal-bar obstacles to discuss the obstacle-shape effect in granular discharge flow. Based on the investigation of dynamical quantities such as velocity distributions, granular temperature, and volume fraction, we found that the triangular obstacle or horizontal bar could be very effective to prevent the clogging. From the obtained result, we consider that the detouring of particles around the obstacle and resultant low packing fraction at the exit region effectively prevent the clogging in a certain class of granular discharge flow." @default.
- W3100621867 created "2020-11-23" @default.
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- W3100621867 date "2017-09-12" @default.
- W3100621867 modified "2023-09-29" @default.
- W3100621867 title "Obstacle-shape effect in a two-dimensional granular silo flow field" @default.
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- W3100621867 doi "https://doi.org/10.1103/physrevfluids.2.094302" @default.
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