Three-dimensional CFD simulation of tapered gas-solid risers by coupling the improved EMMS drag
文献类型：期刊论文
| 作者 | Liu, Xinhua1; Zhao, Meng1; Hu, Shanwei1; Ge, Wei1,2 |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2019-06-15 |
| 卷号 | 352页码:305-313 |
| 关键词 | Hydrodynamics Fluidization Numerical simulation Tapered riser EMMS |
| ISSN号 | 0032-5910 |
| DOI | 10.1016/j.powtec.2019.04.070 |
| 英文摘要 | Tapered gas-solid risers have been used in some industrial processes in order to adapt to the requirements of various reactions, but little attention was paid to these reactors in previous investigation. In this work, three-dimensional gas-solid flow in tapered-out and tapered-in risers was simulated by the two-fluid model using an improved structure-dependent drag based on the EMMS model. The EMMS model was solved at different axial levels to determine different correlations of heterogeneity index with voidage, which were then interpolated between these levels to improve the prediction of varying interphase drag in the tapered risers. Considering the axial variation of the EMMS drag, the simulation predicts much more reasonable flow dynamics in the tapered risers than those coupled with an average EMMS drag or homogeneous drag laws. The axial and radial heterogeneities as well as the parametric effects on the flow dynamics in the tapered risers were discussed in detail, so as to provide reference for the proper design of tapered gas-solid riser reactors. (C) 2019 Elsevier B.V. All rights reserved. |
| WOS关键词 | 2-PHASE FLOW ; MODEL |
| 资助项目 | "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21040400] ; Key Research Program of Frontier Science of the Chinese Academy of Sciences[QYZDJ-SSW-JSC029] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000474322200028 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Research Program of Frontier Science of the Chinese Academy of Sciences |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/30216]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Liu, Xinhua; Hu, Shanwei |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xinhua,Zhao, Meng,Hu, Shanwei,et al. Three-dimensional CFD simulation of tapered gas-solid risers by coupling the improved EMMS drag[J]. POWDER TECHNOLOGY,2019,352:305-313. |
| APA | Liu, Xinhua,Zhao, Meng,Hu, Shanwei,&Ge, Wei.(2019).Three-dimensional CFD simulation of tapered gas-solid risers by coupling the improved EMMS drag.POWDER TECHNOLOGY,352,305-313. |
| MLA | Liu, Xinhua,et al."Three-dimensional CFD simulation of tapered gas-solid risers by coupling the improved EMMS drag".POWDER TECHNOLOGY 352(2019):305-313. |
入库方式： OAI收割
来源：过程工程研究所
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