Direct numerical simulation of Taylor-Couette flow: Regime-dependent role of axial walls
文献类型：期刊论文
| 作者 | Xu, Fan1,2; Zhao, Peng2,3; Sun, Chao5,6; He, Yurong1; Wang, Junwu2,3,4 |
| 刊名 | Chemical Engineering Science
 |
| 出版日期 | 2022-12-14 |
| 卷号 | 263 |
| ISSN号 | 92509 |
| 关键词 | Aspect ratio - Direct numerical simulation - Hydrodynamics - Laminar flow - Numerical models - Turbulence - Vortex flow |
| DOI | 10.1016/j.ces.2022.118075 |
| 英文摘要 | Direct numerical simulation (DNS) of the hydrodynamics of Taylor-Couette reactors (TCR) has adopted axial periodic boundary condition (PBC) to significantly reduce the computational cost, however, the consequences remain unexplored. To this end, DNS was conducted to explore the effect of axial walls on the hydrodynamics of TCR. It was found that (i) the effect of axial walls on the torque is regime-dependent: it is negligible at the nonvortical laminar flow regime and the turbulent Taylor vortices regime, its effect is however significant at the laminar Taylor vortices regime; (ii) the maximal effect of axial walls on the torque appears near the critical Ta for the onset of laminar Taylor vortices, where the relative deviation of torques that are obtained using axial PBC and walls can be as high as 15.1%, because of its critical effect on the reactor hydrodynamics, such as the number of Taylor vortices; (iii) the aspect ratio of TCR affects the torque as expected: the larger the aspect ratio, the smaller the effect of axial walls. 漏 2022 Elsevier Ltd |
| 学科主题 | Torque |
| 项目编号 | This study is financially supported by National Natural Science Foundation of China (11988102). We thank the anonymous reviewers for valuable comments. |
| 出版者 | Elsevier Ltd |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61311]  |
| 作者单位 | 1.School of Energy Science and Engineering, Harbin Institute of Technology, Harbin; 150001, China 2.State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, P. O. Box 353, Beijing; 100190, China 3.School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China 4.Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing; 100190, China 5.Center for Combustion Energy, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing; 100084, China 6.Department of Engineering Mechanics, School of Aerospace Engineering, Tsinghua University, Beijing; 100084, China |
| 推荐引用方式 GB/T 7714 | Xu, Fan,Zhao, Peng,Sun, Chao,et al. Direct numerical simulation of Taylor-Couette flow: Regime-dependent role of axial walls[J]. Chemical Engineering Science,2022,263. |
| APA | Xu, Fan,Zhao, Peng,Sun, Chao,He, Yurong,&Wang, Junwu.(2022).Direct numerical simulation of Taylor-Couette flow: Regime-dependent role of axial walls.Chemical Engineering Science,263. |
| MLA | Xu, Fan,et al."Direct numerical simulation of Taylor-Couette flow: Regime-dependent role of axial walls".Chemical Engineering Science 263(2022). |
入库方式： OAI收割
来源：过程工程研究所
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