Simulation of packed bed with binary mixtures of particles differing in size using correlations and the Discrete Elements Method
Keywords:minimum porosity; Minimum porosity; particle mixture; Particle mixture; packing; Packing; DEM; parametric calibration; Parametric calibration.
The spouted bed is an equipment highly influenced by the porosity of the static bed. Thus, this work aimed to employ literature correlations and the discrete element method to simulate the packing of monoparticle beds and binary mixtures of 1 and 4 mm spheres. The experimental minimum porosity was 0.267, and the Dias correlation agreed well with experimental data and was able to distinguish the occupation and filling packing regimes adequately. Regarding the simulations using the Discrete Element Method, the parameters calibration of the Hertz-Mindlin contact force model showed that the particle-particle static friction coefficient is the factor that most influences the packing, followed by the particle-to-particle friction coefficient bearing friction coefficient, while the particle-to-wall bearing friction coefficient did not influence the bed voidage. The simulations adequately represented the transition between the occupation and filling regimes that govern packing.
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Copyright (c) 2021 Daiane Bortolote Ferreira; Ricardo Correa de Santana; Marcos Antônio de Sousa Barrozo; Davi Leonardo de Souza; José Luiz Vieira Neto; Kassia Graciele dos Santos
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