A multiscale mass transfer model for gas-solid riser flows: Part II - Sub-grid simulation of ozone decomposition
文献类型：期刊论文
| 作者 | Dong, Weigang1,2; Wang, Wei1,2; Li, Jinghai1,2 |
| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2008-05-01 |
| 卷号 | 63期号:10页码:2811-2823 |
| 关键词 | mass transfer ozone decomposition multiscale CFD CFB simulation |
| ISSN号 | 0009-2509 |
| 其他题名 | Chem. Eng. Sci. |
| 中文摘要 | This article is to test the EMMS-based multiscale mass transfer model through computational fluid dynamics (CFD) simulation of ozone decomposition in a circulating fluidized bed (CFB) reactor. Three modeling approaches, namely types A, B and C, are classified according to their drag coefficient closure and mass transfer equations. Simulation results show that the routine approach (type Q with assumption of homogeneous flow and concentration overestimates the ozone conversion rate, introduction of structure-dependent drag force will improve the model prediction (type B), while the best fit to experimental data is obtained by the multiscale mass transfer approach (type A), which takes into account the sub-grid heterogeneity of both flow and concentration. In general, multiscale behavior of mass transfer is more distinct especially for the dense riser flow. The fair agreement between our new model with literature data suggests a fresh paradigm for the CFB related reaction simulation. (C) 2008 Elsevier Ltd. All rights reserved. |
| 英文摘要 | This article is to test the EMMS-based multiscale mass transfer model through computational fluid dynamics (CFD) simulation of ozone decomposition in a circulating fluidized bed (CFB) reactor. Three modeling approaches, namely types A, B and C, are classified according to their drag coefficient closure and mass transfer equations. Simulation results show that the routine approach (type Q with assumption of homogeneous flow and concentration overestimates the ozone conversion rate, introduction of structure-dependent drag force will improve the model prediction (type B), while the best fit to experimental data is obtained by the multiscale mass transfer approach (type A), which takes into account the sub-grid heterogeneity of both flow and concentration. In general, multiscale behavior of mass transfer is more distinct especially for the dense riser flow. The fair agreement between our new model with literature data suggests a fresh paradigm for the CFB related reaction simulation. (C) 2008 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | CIRCULATING FLUIDIZED-BED ; 2-PHASE FLOW ; CFD APPROACH ; REACTORS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000256489000020 |
| 公开日期 | 2013-10-08 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/2738]  |
| 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.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Weigang,Wang, Wei,Li, Jinghai. A multiscale mass transfer model for gas-solid riser flows: Part II - Sub-grid simulation of ozone decomposition[J]. CHEMICAL ENGINEERING SCIENCE,2008,63(10):2811-2823. |
| APA | Dong, Weigang,Wang, Wei,&Li, Jinghai.(2008).A multiscale mass transfer model for gas-solid riser flows: Part II - Sub-grid simulation of ozone decomposition.CHEMICAL ENGINEERING SCIENCE,63(10),2811-2823. |
| MLA | Dong, Weigang,et al."A multiscale mass transfer model for gas-solid riser flows: Part II - Sub-grid simulation of ozone decomposition".CHEMICAL ENGINEERING SCIENCE 63.10(2008):2811-2823. |
入库方式： OAI收割
来源：过程工程研究所
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