A numerical study on gas-fluidized beds of wet flexible fibers
A numerical study on gas-fluidized beds of wet flexible fibers
复制标题
湿柔性纤维气体流化床的数值研究
DOI:
10.1016/j.powtec.2021.117094
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发表时间:
2021-12
影响因子:
5.2
通讯作者:
Yu Guo
中科院分区:
文献类型:
--
作者:
Lixiang Zhong;D;an Xu;Yiyang Jiang;Yu Guo
Gas-fluidized beds of wet flexible fibers with small amounts of liquid are investigated using a coupled approach.of Discrete Element Method (DEM) and Computational Fluid Dynamics (CFD). A liquid-bridge force model is implemented.to account for cohesive contact forces due to formation of liquid bridges among the wet fibers. The.effects of initial bed height, degree of cohesion (characterized by a bond number), and fiber flexibility have.been examined on fluidization characteristics (pressure drop, average height of fluidized bed, solids mixing.rate, and cluster size). It is found that the cohesion and fiber flexibility have impacts on the pressure drop and.minimum fluidization velocity by affecting initial bed height and bed porosity. Compared to pressure drop and.average height of fluidized bed, the mixing rate is more sensitive to changes in the cohesion and fiber flexibility..This work aims to contribute to a better understanding of wet fiber fluidization.
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