CFD simulation of gas-liquid flow in stirred tanks: Effect of drag models
文献类型：期刊论文
| 作者 | Guan, Xiaoping3; Li, Xinju1,2,3; Yang, Ning3; Liu, Mingyan1,2 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2020-04-15 |
| 卷号 | 386页码:11 |
| 关键词 | Computational fluid dynamics Gas-liquid Stirred tank Drag model Mesoscale |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2019.04.134 |
| 英文摘要 | Drag force plays important roles in the prediction of gas-liquid flow in stirred tanks, but systematic studies on drag models are still lacking. In this study, we evaluated the effect of four different drag models (DBS-Local, DBS-Global, Brucato, Schiller-Naumann) in which the DBS model was originally developed for bubble columns. The flow regime, liquid flow field and gas holdup predicted by the four drag models are compared with experiments. The DBS-Local and DBS-Global models show the advantages over the other two in the prediction of gas dispersion and flow structure, since the ratio of effective drag coefficient to bubble diameter is either one or twoorders of magnitude over-estimated by the Brucato model or under-predicted by the Schiller-Naumann model. The flow regime at different rotational speeds and the effects of gas dispersion on the liquid loop structure can be correctly predicted by the DBS drag models. This study demonstrates that the drag model is extremely important to accurately predict the gas-liquid flow in stirred tanks. |
| WOS关键词 | FLUID-DYNAMICS SIMULATION ; BUBBLE-SIZE ; STABILITY CONDITION ; REGIME TRANSITION ; TURBULENCE MODELS ; RUSHTON TURBINE ; HOLDUP ; HYDRODYNAMICS ; DISPERSION ; VESSEL |
| 资助项目 | National Key R&D Program of China[2017YFB0602500] ; National Natural Science Foundation of China[91834303] ; National Natural Science Foundation of China[91634203] ; National Natural Science Foundation of China[21808222] ; Beijing Natural Science Foundation[2184125] ; Strategic Priority Research Program, Chinese Academy of Sciences[XDA21030700] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000551293900003 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Beijing Natural Science Foundation ; Strategic Priority Research Program, Chinese Academy of Sciences |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/41481]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Yang, Ning |
| 作者单位 | 1.Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China 2.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, 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 | Guan, Xiaoping,Li, Xinju,Yang, Ning,et al. CFD simulation of gas-liquid flow in stirred tanks: Effect of drag models[J]. CHEMICAL ENGINEERING JOURNAL,2020,386:11. |
| APA | Guan, Xiaoping,Li, Xinju,Yang, Ning,&Liu, Mingyan.(2020).CFD simulation of gas-liquid flow in stirred tanks: Effect of drag models.CHEMICAL ENGINEERING JOURNAL,386,11. |
| MLA | Guan, Xiaoping,et al."CFD simulation of gas-liquid flow in stirred tanks: Effect of drag models".CHEMICAL ENGINEERING JOURNAL 386(2020):11. |
入库方式： OAI收割
来源：过程工程研究所
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