The role of scale resolution versus inter-particle cohesive forces in two-fluid modeling of bubbling fluidization of Geldart A particles
文献类型：期刊论文
| 作者 | Wang, Junwu ; van der Hoef, M. A.; Kuipers, J. A. M.
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| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2011-09-14 |
| 卷号 | 66期号:18页码:4229-4240 |
| 关键词 | Powder technology Scale resolution Inter-particle cohesive forces Fluidization Particulate processes Multiphase flow |
| 通讯作者 | Wang, JW |
| 英文摘要 | Coarse grid simulations of Geldart A particles in bubbling fluidized beds using standard two-fluid (TF) models, where the constitutive laws are based on the homogeneity of sub-grid scale structures, have been demonstrated to be unsuccessful due to the existence of significant sub-grid scale heterogeneous structures. However, a definite consensus on the fundamental origin of the failure is still lacking. Some claim that the existence of significant inter-particle cohesive forces results in the sub-grid scale heterogeneous structures which takes the form of agglomerates or clusters; others claim that the inter-particle cohesive forces are not the dominant factor, and that the poor performance of TF models is primarily due to the fact that the grid sizes and the time step used in previous studies are too coarse to fully resolve the bubbling structure. To this end, a short overview is firstly presented to discuss the role of scale resolution and inter-particle cohesive force in two-fluid modeling of Geldart A particles; We then qualitatively explain, using a state-of-the-art discrete particle method, why the methods based on the existence of aggregates or clusters work quite well, although the sub-grid scale structure is not properly identified, that is, the sub-grid scale structure takes the form of a bubble-emulsion phase. (C) 2011 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-11-01 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4706]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Wang, Junwu,van der Hoef, M. A.,Kuipers, J. A. M.. The role of scale resolution versus inter-particle cohesive forces in two-fluid modeling of bubbling fluidization of Geldart A particles[J]. CHEMICAL ENGINEERING SCIENCE,2011,66(18):4229-4240. |
| APA | Wang, Junwu,van der Hoef, M. A.,&Kuipers, J. A. M..(2011).The role of scale resolution versus inter-particle cohesive forces in two-fluid modeling of bubbling fluidization of Geldart A particles.CHEMICAL ENGINEERING SCIENCE,66(18),4229-4240. |
| MLA | Wang, Junwu,et al."The role of scale resolution versus inter-particle cohesive forces in two-fluid modeling of bubbling fluidization of Geldart A particles".CHEMICAL ENGINEERING SCIENCE 66.18(2011):4229-4240. |
入库方式： OAI收割
来源：过程工程研究所
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