High-resolution simulation of gas-solid suspension using macro-scale particle methods
文献类型：期刊论文
| 作者 | Ma, Jingsen; Ge, Wei; Wang, Xiaowei; Wang, Junwu ; Li, Jinghai
|
| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2006-11-01 |
| 卷号 | 61期号:21页码:7096-7106 |
| 关键词 | Anisotropy direct numerical simulation drag force distribution gas-solid flow macro-scale pseudo-particle modeling Maxwellian distribution multi-scale structure smoothed particle hydrodynamics |
| ISSN号 | 0009-2509 |
| 其他题名 | Chem. Eng. Sci. |
| 中文摘要 | Dynamic multi-scale structures in a gas-solid suspension with 1024 particles are investigated with direct numerical simulations using macro-scale particle methods. The suspension is found to be characterized by heterogeneity with clustering solids and bypassing gas. The solid particle velocity distribution is found to be anisotropic though nearly Maxwellian in each direction, which is in agreement with measurements in liquid-solid systems, supporting the necessity of incorporating anisotropy into the continuum descriptions of such flows. The drag force on the particles in the dilute phase can be far larger than that in the center of the dense phase, and much less than that on the phase interface, suggesting the insufficiency of correlating interphase friction to local averaged voidage only. However, statistics shows nearly Gaussian distribution of the drag forces, which is potentially favorable to establishing a diffusion model accounting for drag dispersion. The need for a multi-scale description of gas-solid flows, and on the other hand, the power of particle methods as exploring tools for this purpose, are demonstrated. (c) 2006 Elsevier Ltd. All rights reserved. |
| 英文摘要 | Dynamic multi-scale structures in a gas-solid suspension with 1024 particles are investigated with direct numerical simulations using macro-scale particle methods. The suspension is found to be characterized by heterogeneity with clustering solids and bypassing gas. The solid particle velocity distribution is found to be anisotropic though nearly Maxwellian in each direction, which is in agreement with measurements in liquid-solid systems, supporting the necessity of incorporating anisotropy into the continuum descriptions of such flows. The drag force on the particles in the dilute phase can be far larger than that in the center of the dense phase, and much less than that on the phase interface, suggesting the insufficiency of correlating interphase friction to local averaged voidage only. However, statistics shows nearly Gaussian distribution of the drag forces, which is potentially favorable to establishing a diffusion model accounting for drag dispersion. The need for a multi-scale description of gas-solid flows, and on the other hand, the power of particle methods as exploring tools for this purpose, are demonstrated. (c) 2006 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] | LOW-REYNOLDS-NUMBER ; FLUID SYSTEMS ; INELASTIC SPHERES ; COMPLEX-SYSTEMS ; GRANULAR FLOW ; PREFERENTIAL CONCENTRATION ; MULTISCALE METHODOLOGY ; KINETIC-THEORY ; BEDS ; HYDRODYNAMICS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000241446700020 |
| 公开日期 | 2013-10-24 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3988]  |
| 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, Multiphase React Lab, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Jingsen,Ge, Wei,Wang, Xiaowei,et al. High-resolution simulation of gas-solid suspension using macro-scale particle methods[J]. CHEMICAL ENGINEERING SCIENCE,2006,61(21):7096-7106. |
| APA | Ma, Jingsen,Ge, Wei,Wang, Xiaowei,Wang, Junwu,&Li, Jinghai.(2006).High-resolution simulation of gas-solid suspension using macro-scale particle methods.CHEMICAL ENGINEERING SCIENCE,61(21),7096-7106. |
| MLA | Ma, Jingsen,et al."High-resolution simulation of gas-solid suspension using macro-scale particle methods".CHEMICAL ENGINEERING SCIENCE 61.21(2006):7096-7106. |
入库方式： OAI收割
来源：过程工程研究所
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