发表状态 | 已发表Published |
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
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ISSN/eISSN | 0009-2509 |
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 |
DOI | 10.1016/j.ces.2019.01.017 |
URL | 查看来源 |
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 | |
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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