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CFD?DEM Simulation of Influence of Particle Shape on Binary Particles Mixing Characteristics in Fluidized Bed

  • Lijun WANG Guangchao WEI Shuping DUAN Lingfeng XU
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  • College of Energy and Environment, Shenyang Aerospace University, Shenyang, Liaoning 110136, China

Received date: 2016-12-16

  Revised date: 2017-01-14

  Online published: 2017-08-16

Abstract

Three-dimensionally combined computational fluid dynamics (CFD) with discrete element method (DEM) were employed to investigate the gas?solid mixing characteristics of referring to the 3D rectangular fluidized bed explored by Goldschmidt et al. Eulerian turbulent model and Lagrangian particle tracking method were used to model the gas and solid phases respectively. Focused on the influence of the shape of refuse derived fuel (RDF) particle on mixing was investigated, and the Lacey mixing index was introduced as a quantitative criterion. The results showed that the mixing quality of cylindrical particles is less than that of spherical particles with the same volume equivalence ratio and the time required reaching the mixing equilibrium is longer. The distribution of the RDF particle concentration in the bed upper part is higher than the bottom.

Cite this article

Lijun WANG Guangchao WEI Shuping DUAN Lingfeng XU . CFD?DEM Simulation of Influence of Particle Shape on Binary Particles Mixing Characteristics in Fluidized Bed[J]. The Chinese Journal of Process Engineering, 2017 , 17(4) : 684 -688 . DOI: 10.12034/j.issn.1009-606X.216374

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