An improved EMMS model for turbulent flow in pipe and its solution
文献类型：期刊论文
| 作者 | Zhang, Lin; Huang, Wen Lai; Chen, Jianhua |
| 刊名 | PARTICUOLOGY
 |
| 出版日期 | 2023-05-01 |
| 卷号 | 76页码:1-12 |
| ISSN号 | 1674-2001 |
| 关键词 | Mesoscience EMMS Compromise in competition Dominant mechanism Turbulent flow in pipe |
| DOI | 10.1016/j.partic.2022.07.013 |
| 英文摘要 | Based on the existing energy-minimization multi-scale (EMMS) model for turbulent flow in pipe, an improved version is proposed, in which not only a new radial velocity distribution is introduced but also the quantification of total dissipation over the cross-section of pipe is improved for the dominant mechanism of fully turbulent flow in pipe. Then four dynamic equality constraints and some other constraints are constructed but there are five parameters involved, leading to one free variable left. Through the compromise in competition between dominant mechanisms for laminar and fully turbulent flow in pipe respectively, the above four constructed dynamic equality constraints can be closed. Finally, the cases for turbulent flow in pipe with low, moderate and high Reynolds number are simulated by the improved EMMS model. The numerical results show that the model can obtain reasonable results which agree well with the data computed by the direct numerical simulation and those obtained by experi-ment. This illustrates that the improved EMMS model for turbulent flow in pipe is reasonable and the compromise in competition between dominant mechanisms is indeed a universal governing principle hidden in complex systems. Especially, one more EMMS model for a complex system is offered, pro-moting the further development of mesoscience.(c) 2022 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved. |
| WOS关键词 | DIRECT NUMERICAL-SIMULATION ; CIRCULATING FLUIDIZED-BEDS ; STABILITY CONDITION ; MULTISCALE ; MESOSCALES ; COMPROMISE ; STRESS |
| 资助项目 | State Key Laboratory of Multi-phase Complex Systems[MPCS-2022-A-01] ; Na- tional Natural Science Foundation of China[22078327] |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE INC |
| WOS记录号 | WOS:000860706200001 |
| 资助机构 | State Key Laboratory of Multi-phase Complex Systems ; Na- tional Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/54782]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Zhang, Lin |
| 作者单位 | Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Lin,Huang, Wen Lai,Chen, Jianhua. An improved EMMS model for turbulent flow in pipe and its solution[J]. PARTICUOLOGY,2023,76:1-12. |
| APA | Zhang, Lin,Huang, Wen Lai,&Chen, Jianhua.(2023).An improved EMMS model for turbulent flow in pipe and its solution.PARTICUOLOGY,76,1-12. |
| MLA | Zhang, Lin,et al."An improved EMMS model for turbulent flow in pipe and its solution".PARTICUOLOGY 76(2023):1-12. |
入库方式： OAI收割
来源：过程工程研究所
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