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Simulation of dynamic fluid-solid interactions with an improved direct-forcing immersed boundary method | |
Alternative Title | Particuology |
Di, Shengbin1,2; Ge, Wei1 | |
2015-02-01 | |
Source Publication | PARTICUOLOGY
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ISSN | 1674-2001 |
Volume | 18Issue:FEBPages:22-34 |
Abstract | Dynamic fluid-solid interactions are widely found in chemical engineering, such as in particle-laden flows, which usually contain complex moving boundaries. The immersed boundary method (IBM) is a convenient approach to handle fluid-solid interactions with complex geometries. In this work, Uhlmann's direct-forcing IBM is improved and implemented on a supercomputer with CPU-GPU hybrid architecture. The direct-forcing IBM is modified as follows: the Poisson's equation for pressure is solved before evaluation of the body force, and the force is only distributed to the Cartesian grids inside the immersed boundary. A multidirect forcing scheme is used to evaluate the body force. These modifications result in a divergence-free flow field in the fluid domain and the no-slip boundary condition at the immersed boundary simultaneously. This method is implemented in an explicit finite-difference fractional-step scheme, and validated by 2D simulations of lid-driven cavity flow, Couette flow between two concentric cylinders and flow over a circular cylinder. Finally, the method is used to simulate the sedimentation of two circular particles in a channel. The results agree very well with previous experimental and numerical data, and are more accurate than the conventional direct-forcing method, especially in the vicinity of a moving boundary. (C) 2014 Published by Elsevier B.V. on behalf of Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. ;Dynamic fluid-solid interactions are widely found in chemical engineering, such as in particle-laden flows, which usually contain complex moving boundaries. The immersed boundary method (IBM) is a convenient approach to handle fluid-solid interactions with complex geometries. In this work, Uhlmann's direct-forcing IBM is improved and implemented on a supercomputer with CPU-GPU hybrid architecture. The direct-forcing IBM is modified as follows: the Poisson's equation for pressure is solved before evaluation of the body force, and the force is only distributed to the Cartesian grids inside the immersed boundary. A multidirect forcing scheme is used to evaluate the body force. These modifications result in a divergence-free flow field in the fluid domain and the no-slip boundary condition at the immersed boundary simultaneously. This method is implemented in an explicit finite-difference fractional-step scheme, and validated by 2D simulations of lid-driven cavity flow, Couette flow between two concentric cylinders and flow over a circular cylinder. Finally, the method is used to simulate the sedimentation of two circular particles in a channel. The results agree very well with previous experimental and numerical data, and are more accurate than the conventional direct-forcing method, especially in the vicinity of a moving boundary. (C) 2014 Published by Elsevier B.V. on behalf of Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. |
Keyword | Immersed Boundary Method Fluid-solid Interactions No-slip Condition Divergence-free Condition Cpu-gpu Hybrid Architecture |
Subtype | Article |
WOS Headings | Science & Technology ; Technology |
DOI | 10.1016/j.partic.2014.05.004 |
URL | 查看原文 |
Indexed By | SCI |
Language | 英语 |
WOS Keyword | NAVIER-STOKES EQUATIONS ; PARTICLE-LADEN FLOWS ; PARTICULATE FLOWS ; INTERFACE METHOD ; CYLINDER |
WOS Research Area | Engineering ; Materials Science |
WOS Subject | Engineering, Chemical ; Materials Science, Multidisciplinary |
WOS ID | WOS:000349730200003 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.ipe.ac.cn/handle/122111/11724 |
Collection | 研究所(批量导入) |
Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
Recommended Citation GB/T 7714 | Di, Shengbin,Ge, Wei. Simulation of dynamic fluid-solid interactions with an improved direct-forcing immersed boundary method[J]. PARTICUOLOGY,2015,18(FEB):22-34. |
APA | Di, Shengbin,&Ge, Wei.(2015).Simulation of dynamic fluid-solid interactions with an improved direct-forcing immersed boundary method.PARTICUOLOGY,18(FEB),22-34. |
MLA | Di, Shengbin,et al."Simulation of dynamic fluid-solid interactions with an improved direct-forcing immersed boundary method".PARTICUOLOGY 18.FEB(2015):22-34. |
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Simulation of dynami(2598KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text |
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