CFD-DEM Simulation of Fluidization of Polyhedral Particles in a Fluidized Bed

被引:16
|
作者
Liu, Zihan [1 ]
Ma, Huaqing [1 ]
Zhao, Yongzhi [1 ]
机构
[1] Zhejiang Univ, Inst Proc Equipment, Hangzhou 310027, Peoples R China
基金
中国国家自然科学基金;
关键词
CFD-DEM; polyhedron; fluidized bed; non-spherical particle; mixing; ROD-LIKE PARTICLES; NONSPHERICAL PARTICLES; CONTACT DETECTION; THEORETICAL DEVELOPMENTS; DRAG COEFFICIENT; HOPPER DISCHARGE; MULTI-SPHERE; DISCRETE; MODEL; SHAPE;
D O I
10.3390/en14164939
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Fluidization of non-spherical particles is a common process in energy industries and chemical engineering. Understanding the fluidization of non-spherical particles is important to guide relevant processes. There already have been numerous studies which investigate the behaviors of different non-spherical particles during fluidization, but the investigations of the fluidization of polyhedral particles do not receive much attention. In this study, the investigation of the fluidization of polyhedral particles described by the polyhedron approach is conducted with a numerical CFD-DEM method. Experiments of the fluidization of three kinds of polyhedral particles are conducted under the same condition with corresponding simulations to validate the accuracy of our CFD-DEM model. The results indicate that our CFD-DEM model with the polyhedron approach can predict the behaviors of polyhedral particles with reasonable accuracy. Fluidization behaviors of different polyhedral particles are also investigated in this study. Compared to spherical particles, the motion of polyhedral particles is stronger, and mixing degree is higher under the same fluidization gas velocity.
引用
收藏
页数:19
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