A stability condition for turbulence model: From EMMS model to EMMS-based turbulence model
文献类型：期刊论文
| 作者 | Zhang, Lin1; Qiu, Xiaoping1,2; Wang, Limin1; Li, Jinghai1 |
| 刊名 | PARTICUOLOGY
 |
| 出版日期 | 2014-10-01 |
| 卷号 | 16期号:OCT页码:142-154 |
| 关键词 | Stability condition Mathematical modeling Turbulence EMMS Hydrodynamics Computational fluid dynamics |
| ISSN号 | 1674-2001 |
| 其他题名 | Particuology |
| 中文摘要 | The closure problem of turbulence is still a challenging issue in turbulence modeling. In this work, a stability condition is used to close turbulence. Specifically, we regard single-phase flow as a mixture of turbulent and non-turbulent fluids, separating the structure of turbulence. Subsequently, according to the picture of the turbulent eddy cascade, the energy contained in turbulent flow is decomposed into different parts and then quantified. A turbulence stability condition, similar to the principle of the energy-minimization multi-scale (EMMS) model for gas-solid systems, is formulated to close the dynamic constraint equations of turbulence, allowing the inhomogeneous structural parameters of turbulence to be optimized. We name this model as the "EMMS-based turbulence model", and use it to construct the corresponding turbulent viscosity coefficient. To validate the EMMS-based turbulence model, it is used to simulate two classical benchmark problems, lid-driven cavity flow and turbulent flow with forced convection in an empty room. The numerical results show that the EMMS-based turbulence model improves the accuracy of turbulence modeling due to it considers the principle of compromise in competition between viscosity and inertia. (C) 2014 Published by Elsevier B.V. on behalf of Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. |
| 英文摘要 | The closure problem of turbulence is still a challenging issue in turbulence modeling. In this work, a stability condition is used to close turbulence. Specifically, we regard single-phase flow as a mixture of turbulent and non-turbulent fluids, separating the structure of turbulence. Subsequently, according to the picture of the turbulent eddy cascade, the energy contained in turbulent flow is decomposed into different parts and then quantified. A turbulence stability condition, similar to the principle of the energy-minimization multi-scale (EMMS) model for gas-solid systems, is formulated to close the dynamic constraint equations of turbulence, allowing the inhomogeneous structural parameters of turbulence to be optimized. We name this model as the "EMMS-based turbulence model", and use it to construct the corresponding turbulent viscosity coefficient. To validate the EMMS-based turbulence model, it is used to simulate two classical benchmark problems, lid-driven cavity flow and turbulent flow with forced convection in an empty room. The numerical results show that the EMMS-based turbulence model improves the accuracy of turbulence modeling due to it considers the principle of compromise in competition between viscosity and inertia. (C) 2014 Published by Elsevier B.V. on behalf of Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Engineering ; Materials Science |
| 关键词[WOS] | CFD-SIMULATION ; FLOW ; BREAKUP ; SYSTEMS ; DROP ; DRAG |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000343352700015 |
| 公开日期 | 2014-12-01 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/11693]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, EMMS Grp, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Lin,Qiu, Xiaoping,Wang, Limin,et al. A stability condition for turbulence model: From EMMS model to EMMS-based turbulence model[J]. PARTICUOLOGY,2014,16(OCT):142-154. |
| APA | Zhang, Lin,Qiu, Xiaoping,Wang, Limin,&Li, Jinghai.(2014).A stability condition for turbulence model: From EMMS model to EMMS-based turbulence model.PARTICUOLOGY,16(OCT),142-154. |
| MLA | Zhang, Lin,et al."A stability condition for turbulence model: From EMMS model to EMMS-based turbulence model".PARTICUOLOGY 16.OCT(2014):142-154. |
入库方式： OAI收割
来源：过程工程研究所
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