Tortuosity model for fixed beds randomly packed with identical particles
Tortuosity model for fixed beds randomly packed with identical particles
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DOI：
10.1016/j.ces.2009.11.011
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发表时间：
2010-03
影响因子：
4.7
通讯作者：
P. Lanfrey;Željko V. Kuzeljevic;M. Duduković
中科院分区：
文献类型：
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作者：
P. Lanfrey;Željko V. Kuzeljevic;M. Duduković
建立了随机填充相同颗粒的固定床的弯曲度的理论模型。发现挠度与填料结构因子（(1−ε)4/3/εφ2）成正比，该因子由床层空隙率和颗粒形状因子（球度）明确给出。然后，在不引入任何经验常数的情况下，通过简单的模型闭包缩放弯曲方程。与现有的固定床弯曲度数据相比，该模型显示出令人鼓舞的定性和定量结果。
A theoretical model for the tortuosity of a fixed bed randomly packed with identical particles has been developed. The tortuosity is found to be proportional to a packing structure factor((1−ε)4/3/εφ2) which is explicitly given in terms of bed voidage and particles shape factor (sphericity). The tortuosity equation is then scaled via a simple model closure without introduction of any empirical constants. The model exhibits encouraging qualitative as well as quantitative results when compared to available fixed bed tortuosity data.