Hydrodynamic Modeling of Gas-Solid Bubbling Fluidization Based on Energy-Minimization Multiscale (EMMS) Theory
文献类型：期刊论文
| 作者 | Liu, Xinhua1; Jiang, Yuefang1,2; Liu, Cenfan1; Wang, Wei1; Li, Jinghai1 |
| 刊名 | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| 出版日期 | 2014-02-19 |
| 卷号 | 53期号:7页码:2800-2810 |
| 关键词 | drag coefficient fine powders dense phase beds flow simulation pressure cfd particles diameter |
| ISSN号 | 0888-5885 |
| 其他题名 | Ind. Eng. Chem. Res. |
| 中文摘要 | Hydrodynamic modeling of gas-solid bubbling fluidization is of significance to the development of gas-solid bubbling reactors since it still remains at the stage of experimental and empirical science. As is the role of particle clusters in gas solid fast fluidization, gas bubbles characterize the structural heterogeneity of gas-solid bubbling fluidization, and their evolution is mainly subject to the constraints of the stability and boundary conditions of the system. By considering the expansion work of gas bubbles against the normal pressure stress in the emulsion phase, an improved necessary stability condition is proposed to close a gas-solid bubbling model. Applying the upgraded gas-solid bubbling model at the scale of vessels, the steady-state hydrodynamics of gas-solid bubbling fluidization can be reproduced without introducing bubble-specific empirical correlations such as for diameter and/or acceleration. The unified modeling of the entire gas-solid fluidization regime from bubbling to fast fluidization is performed by integrating the upgraded gas-solid bubbling model with the original energy-minimization multiscale (EMMS) model. Incorporating the upgraded gas-solid bubbling model into commercial computational fluid dynamics (CFD) software at the scale of computational cells, the unsteady-state simulation of gas-solid bubbling fluidization is realized with a higher accuracy than that based on homogeneous drag models. |
| 英文摘要 | Hydrodynamic modeling of gas-solid bubbling fluidization is of significance to the development of gas-solid bubbling reactors since it still remains at the stage of experimental and empirical science. As is the role of particle clusters in gas solid fast fluidization, gas bubbles characterize the structural heterogeneity of gas-solid bubbling fluidization, and their evolution is mainly subject to the constraints of the stability and boundary conditions of the system. By considering the expansion work of gas bubbles against the normal pressure stress in the emulsion phase, an improved necessary stability condition is proposed to close a gas-solid bubbling model. Applying the upgraded gas-solid bubbling model at the scale of vessels, the steady-state hydrodynamics of gas-solid bubbling fluidization can be reproduced without introducing bubble-specific empirical correlations such as for diameter and/or acceleration. The unified modeling of the entire gas-solid fluidization regime from bubbling to fast fluidization is performed by integrating the upgraded gas-solid bubbling model with the original energy-minimization multiscale (EMMS) model. Incorporating the upgraded gas-solid bubbling model into commercial computational fluid dynamics (CFD) software at the scale of computational cells, the unsteady-state simulation of gas-solid bubbling fluidization is realized with a higher accuracy than that based on homogeneous drag models. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | DRAG COEFFICIENT ; FINE POWDERS ; DENSE PHASE ; BEDS ; FLOW ; SIMULATION ; PRESSURE ; CFD ; PARTICLES ; DIAMETER |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000332262000028 |
| 公开日期 | 2014-05-06 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/8117]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.China Univ Petr, State Key Lab Heavy Oil Proc, Qingdao 266555, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xinhua,Jiang, Yuefang,Liu, Cenfan,et al. Hydrodynamic Modeling of Gas-Solid Bubbling Fluidization Based on Energy-Minimization Multiscale (EMMS) Theory[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2014,53(7):2800-2810. |
| APA | Liu, Xinhua,Jiang, Yuefang,Liu, Cenfan,Wang, Wei,&Li, Jinghai.(2014).Hydrodynamic Modeling of Gas-Solid Bubbling Fluidization Based on Energy-Minimization Multiscale (EMMS) Theory.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,53(7),2800-2810. |
| MLA | Liu, Xinhua,et al."Hydrodynamic Modeling of Gas-Solid Bubbling Fluidization Based on Energy-Minimization Multiscale (EMMS) Theory".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 53.7(2014):2800-2810. |
入库方式： OAI收割
来源：过程工程研究所
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