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题名Investigation of drag properties for flow through and around square arrays of cylinders at low Reynolds numbers
作者
发表日期2019-05-18
发表期刊Chemical Engineering Science
ISSN/eISSN0009-2509
卷号199页码:285-301
摘要

The drag properties of flow through and around square arrays of 10 × 10 evenly spaced circular cylinders with a wide range of solid fraction ϕ from 9.69×10 to 0.785 and Reynold number of the array Re from 1 to 50 are investigated numerically. The purpose of the present study is to better understand the phenomena of flow through and around permeable bodies that appear in bioreactors and fluid–solid reactors, for example. Instead of using the semi-empirical porous medium model, the direct numerical simulation is employed in order to investigate the flow mechanism from a microscopic point of view. A peak in drag coefficient is observed for the range of ϕ investigated, which appears at a smaller ϕ as Re increases. Three flow regimes are identified based on the shape effects quantified via the averaged velocity within the array, and the drag property in each regime is analyzed. A novel drag formula is also found by investigating the dependence of drag on ϕ and R (Reynolds number based on the mean velocity within the array). Finally, the dimensionless macroscopic permeability Da is estimated via the Darcy's law. The drag ratio computed is in a good agreement with the previous results from porous media models.

关键词Computational fluid dynamics Cylinder array Drag Fluid mechanics Low-Reynolds number flow Permeable body
DOI10.1016/j.ces.2019.01.017
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收录类别SCIE
语种英语English
WOS研究方向Engineering
WOS类目Engineering, Chemical
WOS记录号WOS:000460156700024
Scopus入藏号2-s2.0-85061013368
引用统计
被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://repository.uic.edu.cn/handle/39GCC9TT/10637
专题个人在本单位外知识产出
通讯作者Yu, Peng
作者单位
1.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Jiangsu Key Laboratory of Construction Materials,School of Materials Science and Engineering,Southeast University,Nanjing,210018,China
推荐引用方式
GB/T 7714
Tang, Tingting,Yu, Peng,Shan, Xiaowenet al. Investigation of drag properties for flow through and around square arrays of cylinders at low Reynolds numbers[J]. Chemical Engineering Science, 2019, 199: 285-301.
APA Tang, Tingting, Yu, Peng, Shan, Xiaowen, Chen, Huisu, & Su, Jian. (2019). Investigation of drag properties for flow through and around square arrays of cylinders at low Reynolds numbers. Chemical Engineering Science, 199, 285-301.
MLA Tang, Tingting,et al."Investigation of drag properties for flow through and around square arrays of cylinders at low Reynolds numbers". Chemical Engineering Science 199(2019): 285-301.
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