Similarity Model for DEM Simulation of Fluidized Bed
作者： Kimiaki Washino , Chih-Hung Hsu , Toshihiro Kawaguchi , Yutaka Tsuji
DOI: 10.4164/SPTJ.44.198
关键词: Fluidized bed 、 Superficial velocity 、 Similarity (network science) 、 Similitude 、 Discrete element method 、 Particle number 、 Mechanics 、 Engineering 、 Simulation 、 Particle 、 Particle density
摘要: Discrete Element Method (DEM) is widely applied to the numerical simulations of fluidized beds. However, computational expense increases explosively as number particles increases. This issue hinders DEM from being real-scale simulations. A model particle sometimes employed in order overcome this problem, which real are replaced by larger particles. When used, some conditions (e. g., superficial velocity, gas density, viscosity, density) must be adjusted accordingly. Those referred ‘similarity conditions.’ In research similarity derived equations change through a dimensionless analysis. Bubble motions compared between cases and case validate proposed conditions.
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