Modeling and simulation of liquid pulsed particulate fluidized beds
文献类型：期刊论文
| 作者 | Jin, GD; Liu, DY |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2005-07-06 |
| 卷号 | 154期号:2-3页码:138-155 |
| 关键词 | fluidization pulsed flow two-fluid model local equilibrium model numerical simulation concentration wave |
| ISSN号 | 0032-5910 |
| 其他题名 | Powder Technol. |
| 中文摘要 | Pulsed fluidization is of considerable interest in process engineering for improving fluidization quality. Quantitative understanding of the pulsed two-phase flow behaviors is very important for proper design and optimum operation of such contactors. The main objective of this study is to understand the mathematical models for liquid pulsed particulate fluidization and its dynamic processes. The state of the arts of the Two-Fluid Model (TFM) and its constitutive relationships are discussed and then, the Local Equilibrium Model (LEM), a simplified version of TFM, is developed and solved for liquid pulsed fluidization. LEM is proposed to describe the liquid pulsed fluidization with acceptable engineering accuracy as compared with the experimental data, and its shortcomings are also discussed at length by analyzing the relaxation processes of the two-phase flow due to a jump change of fluidizing velocity and the structure of concentration discontinuity which forms in the bed collapse process. The main shortcoming of LEM is that some detailed information in the flow fields is lost. However, errors only exist in a time interval of tens of milliseconds (several times of particle relaxation time) and a spatial span of several millimeters (several times of particle diameter). (c) 2005 Elsevier B.V. All rights reserved. |
| 英文摘要 | Pulsed fluidization is of considerable interest in process engineering for improving fluidization quality. Quantitative understanding of the pulsed two-phase flow behaviors is very important for proper design and optimum operation of such contactors. The main objective of this study is to understand the mathematical models for liquid pulsed particulate fluidization and its dynamic processes. The state of the arts of the Two-Fluid Model (TFM) and its constitutive relationships are discussed and then, the Local Equilibrium Model (LEM), a simplified version of TFM, is developed and solved for liquid pulsed fluidization. LEM is proposed to describe the liquid pulsed fluidization with acceptable engineering accuracy as compared with the experimental data, and its shortcomings are also discussed at length by analyzing the relaxation processes of the two-phase flow due to a jump change of fluidizing velocity and the structure of concentration discontinuity which forms in the bed collapse process. The main shortcoming of LEM is that some detailed information in the flow fields is lost. However, errors only exist in a time interval of tens of milliseconds (several times of particle relaxation time) and a spatial span of several millimeters (several times of particle diameter). (c) 2005 Elsevier B.V. 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] | 2-PHASE FLOW THEORY ; NUMERICAL-SIMULATION ; GAS ; DYNAMICS ; BUBBLES ; INSTABILITY ; EQUATIONS ; WAVES |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000230969300010 |
| 公开日期 | 2013-10-25 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4198]  |
| 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 Mech, DES, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, MPR, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jin, GD,Liu, DY. Modeling and simulation of liquid pulsed particulate fluidized beds[J]. POWDER TECHNOLOGY,2005,154(2-3):138-155. |
| APA | Jin, GD,&Liu, DY.(2005).Modeling and simulation of liquid pulsed particulate fluidized beds.POWDER TECHNOLOGY,154(2-3),138-155. |
| MLA | Jin, GD,et al."Modeling and simulation of liquid pulsed particulate fluidized beds".POWDER TECHNOLOGY 154.2-3(2005):138-155. |
入库方式： OAI收割
来源：过程工程研究所
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