A mesoscale bubble-induced turbulence model and simulation of gas-liquid flows
文献类型：期刊论文
| 作者 | Jiao, Yunpeng1,3; Wang, Limin1,3; Chen, Jianhua2,3 |
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2023 |
| 卷号 | 35期号:1页码:18 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0132961 |
| 英文摘要 | In gas-liquid two-phase flows, bubble motion significantly affects liquid phase turbulence, and adding bubble-induced turbulence (BIT) source term is widely used to improve the simulation accuracy. This paper presents a new BIT model based on the energy-minimization multi-scale (EMMS) methodology. The model was constructed by considering two mesoscale factors, i.e., the sub-grid structures through analyzing the slip velocity and the gas holdup gradient, and the equivalent diameter of turbulent eddies calculated by the EMMS-based turbulence model. In order to verify its performance, the model was incorporated to the Eulerian-Lagrangian simulating framework and applied to two typical experimental systems. Both mean flow characteristics and turbulence quantities were well predicted, and the new model showed advantages over traditional BIT models, especially at higher gas velocities. Moreover, a strategy for counting energy dissipation in the simulation was devised and performed whereby the dual effects of promotion and suppression on liquid phase turbulence by bubbles can be reflected. The simulations demonstrated that BIT dominated the energy dissipation and turbulence was enhanced by BIT at higher gas velocities, while shear-induced turbulence dominated the energy dissipation and turbulence is reduced due to the suppression by bubbles at lower gas velocities. |
| WOS关键词 | 2-PHASE FLOW ; TRANSVERSE MIGRATION ; CFD-SIMULATION ; HEAT-TRANSFER ; FLUID-FLOW ; REACTORS ; PIPES ; LDA |
| 资助项目 | National Natural Science Foundation of China[22078327] ; National Natural Science Foundation of China[51776212] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A13] ; State Key Laboratory of Multiphase Complex Systems[MPCS-2022-A-01] ; Chinese Academy of Sciences[QYZDB-SSW-SYS029] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| 出版者 | AIP Publishing |
| WOS记录号 | WOS:000909716000013 |
| 资助机构 | National Natural Science Foundation of China ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; State Key Laboratory of Multiphase Complex Systems ; Chinese Academy of Sciences |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/56704]  |
| 通讯作者 | Chen, Jianhua |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China 3.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 | Jiao, Yunpeng,Wang, Limin,Chen, Jianhua. A mesoscale bubble-induced turbulence model and simulation of gas-liquid flows[J]. PHYSICS OF FLUIDS,2023,35(1):18. |
| APA | Jiao, Yunpeng,Wang, Limin,&Chen, Jianhua.(2023).A mesoscale bubble-induced turbulence model and simulation of gas-liquid flows.PHYSICS OF FLUIDS,35(1),18. |
| MLA | Jiao, Yunpeng,et al."A mesoscale bubble-induced turbulence model and simulation of gas-liquid flows".PHYSICS OF FLUIDS 35.1(2023):18. |
入库方式： OAI收割
来源：过程工程研究所
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