CFD simulations of tapered bubbling/turbulent fluidized beds with/without gas distributor based on the structure-based drag model
文献类型：期刊论文
| 作者 | Zou, Zheng1; Liu, Wenming2; Yan, Dong1; Xie, Zhaohui1; Li, Hongzhong1,3; Zhu, Qingshan1,3; He, Shengyi4 |
| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2019-07-20 |
| 卷号 | 202页码:157-168 |
| ISSN号 | 0009-2509 |
| 关键词 | Fluidization Tapered fluidized bed CFD The structure-based drag model |
| DOI | 10.1016/j.ces.2019.03.034 |
| 英文摘要 | The hydrodynamic characteristics of tapered bubbling/turbulent fluidized beds with/without gas distributor are simulated based on the structure-based drag model. Besides the only parameter of gas voidage (epsilon(g)) contained in the original drag model, the heterogeneous drag index (H-d) for the tapered fluidized bed (TFB) also includes the parameter of gas velocity (u(g)) for the axial velocity gradient along bed height. Both the simulations of tapered bubbling and turbulent fluidized beds achieve more accurate predictions than the traditional drag models. There exist dilute center and dense annular regions with solids cycle flow structure in the TFB. The simulation also gives reasonable prediction for TFB without gas distributor, the variation of gas voidage profile reveals gas converging toward bed center with axial location rising. (C) 2019 Elsevier Ltd. All rights reserved. |
| WOS关键词 | SOLID FLOW ; HYDRODYNAMIC CHARACTERISTICS ; FRICTIONAL STRESS ; SPOUTED BED ; PARTICLES ; SEGREGATION ; COEFFICIENT ; PENETRATION ; BEHAVIOR ; JET |
| 资助项目 | National Natural Science Foundation of China[21736010] ; National Natural Science Foundation of China[21878304] ; State Key Development Program for Basic Research of China (973 Program)[2015CB251402] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000463879900015 |
| 资助机构 | National Natural Science Foundation of China ; State Key Development Program for Basic Research of China (973 Program) |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28136]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Li, Hongzhong; Zhu, Qingshan |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, POB 353, Beijing 100190, Peoples R China 2.SINOPEC, Res Inst Petr Proc, Beijing 100083, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.BOE Technol Grp Co Ltd, Beijing 100016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zou, Zheng,Liu, Wenming,Yan, Dong,et al. CFD simulations of tapered bubbling/turbulent fluidized beds with/without gas distributor based on the structure-based drag model[J]. CHEMICAL ENGINEERING SCIENCE,2019,202:157-168. |
| APA | Zou, Zheng.,Liu, Wenming.,Yan, Dong.,Xie, Zhaohui.,Li, Hongzhong.,...&He, Shengyi.(2019).CFD simulations of tapered bubbling/turbulent fluidized beds with/without gas distributor based on the structure-based drag model.CHEMICAL ENGINEERING SCIENCE,202,157-168. |
| MLA | Zou, Zheng,et al."CFD simulations of tapered bubbling/turbulent fluidized beds with/without gas distributor based on the structure-based drag model".CHEMICAL ENGINEERING SCIENCE 202(2019):157-168. |
入库方式： OAI收割
来源：过程工程研究所
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