Knowledge Management System Of Institute of Earth Environment, CAS
Discrete element simulation of particle flow in arbitrarily complex geometries | |
Su, JW (Su, Junwei)[1,4]; Gu, ZL (Gu, Zhaolin)[2,3]; Xu, XY (Xu, Xiaoyun)[4] | |
2011-12-01 | |
发表期刊 | CHEMICAL ENGINEERING SCIENCE |
卷号 | 66期号:23页码:6069-6088 |
文章类型 | 期刊论文 |
摘要 | Conventional simulations of dense particle flows in complex geometries usually involve the use of glued particles to approximate geometric surface. This study is concerned with the development of a robust and accurate algorithm for detecting the interaction between a spherical particle and an arbitrarily complex geometric surface in the framework of soft-sphere discrete element model (DEM) without introducing any assumptions. Numerical experiments specially designed to validate the algorithm shows that the new algorithm can accurately predict the contact state of a particle with a complex geometric surface. Based on the proposed algorithm, a new solver for simulation of dense particle flows is developed and implemented into an open source computational fluid dynamics (CFD) software package OpenFOAM. The solver is firstly employed to simulate hydrodynamics in a bubble fluidized bed. Numerical results show that a 3D simulation can predict the bubble size better than a 2D simulation. Subsequently, gas-solid hydrodynamics in an immersed tube fluidized bed is simulated. Results show that bubble coalescence and breakup behavior around the immersed tubes are well captured by the numerical model. In addition, seven different particle flow patterns around the immersed tubes are identified based on the numerical results obtained. |
关键词 | Discrete element method Unstructured mesh Particle flow OpenFOAM Fluidized bed Complex geometry |
DOI | 10.1016/j.ces.2011.08.025 |
收录类别 | SCI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/10336 |
专题 | 黄土与第四纪地质国家重点实验室(2010~) |
通讯作者 | Gu, ZL (Gu, Zhaolin)[2,3] |
作者单位 | 1.School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China; 2.School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China; 3.SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, China; 4.Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK |
推荐引用方式 GB/T 7714 | Su, JW ,Gu, ZL ,Xu, XY . Discrete element simulation of particle flow in arbitrarily complex geometries[J]. CHEMICAL ENGINEERING SCIENCE,2011,66(23):6069-6088. |
APA | Su, JW ,Gu, ZL ,&Xu, XY .(2011).Discrete element simulation of particle flow in arbitrarily complex geometries.CHEMICAL ENGINEERING SCIENCE,66(23),6069-6088. |
MLA | Su, JW ,et al."Discrete element simulation of particle flow in arbitrarily complex geometries".CHEMICAL ENGINEERING SCIENCE 66.23(2011):6069-6088. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Discrete element sim(2189KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 请求全文 |
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