Computational fluid dynamics simulation of hydrodynamics in the riser of an external loop airlift reactor
文献类型：期刊论文
| 作者 | Jiang, Xuedong1,2,3; Yang, Ning2,3; Yang, Bolun1 |
| 刊名 | PARTICUOLOGY
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 27期号:AUG页码:95-101 |
| 关键词 | Computational fluid dynamics External loop airlift reactor Drag model Gas holdup Multiscale Mesoscale |
| ISSN号 | 1674-2001 |
| 英文摘要 | Local hydrodynamics in the riser of an external loop airlift reactor (EL-ALR) are identified and the performances of three drag models are evaluated in computational fluid dynamics simulation. The simulation results show that the Schiller-Naumann drag model underestimated the local gas holdup at lower superficial gas velocity whereas the Tomiyama drag model overestimated that at higher superficial gas velocity. By contrast, the dual-bubble-size (DBS)-local drag model gave more reasonable radial and axial distributions of gas holdup in all cases. The reason is that the DBS-local drag model gave correct values of the lumped parameter, i.e., the ratio of the drag coefficient to bubble diameter, for varying operating conditions and radial positions. This ratio is reasonably expected to decrease with increasing superficial gas velocity and be smaller in the center and larger near the wall. Only the DBS-local drag model correctly reproduced these trends. The radial profiles of the axial velocity of the liquid and gas predicted by the DBS-local model also agreed well with experimental data. (C) 2015 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved. |
| 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] | BUBBLE-SIZE DISTRIBUTION ; CHURN-TURBULENT REGIME ; CFD SIMULATION ; LIFT FORCE ; STABILITY CONDITION ; SLURRY REACTOR ; FLOW STRUCTURE ; EULERIAN SIMULATIONS ; COLUMN REACTORS ; VERTICAL PIPE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000378959000011 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/21194]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 作者单位 | 1.Xi An Jiao Tong Univ, Dept Chem Engn, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China 2.Chinese Acad Sci, Ctr Mesosci, Beijing 100190, Peoples R China 3.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Xuedong,Yang, Ning,Yang, Bolun. Computational fluid dynamics simulation of hydrodynamics in the riser of an external loop airlift reactor[J]. PARTICUOLOGY,2016,27(AUG):95-101. |
| APA | Jiang, Xuedong,Yang, Ning,&Yang, Bolun.(2016).Computational fluid dynamics simulation of hydrodynamics in the riser of an external loop airlift reactor.PARTICUOLOGY,27(AUG),95-101. |
| MLA | Jiang, Xuedong,et al."Computational fluid dynamics simulation of hydrodynamics in the riser of an external loop airlift reactor".PARTICUOLOGY 27.AUG(2016):95-101. |
入库方式： OAI收割
来源：过程工程研究所
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