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Lattice Boltzmann based discrete simulation for gas-solid fluidization
Wang, Limin1; Zhang, Bo1,2; Wang, Xiaowei1; Ge, Wei1; Li, Jinghai1
2013-09-20
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume101Issue:0Pages:228-239
AbstractDiscrete particle simulation, a combined approach of computational fluid dynamics and discrete methods such as DEM (discrete element method), DSMC (direct simulation Monte Carlo), SPH (smoothed particle hydrodynamics), PIC (particle-in-cell), etc., is becoming a practical tool for exploring lab-scale gas solid systems owing to the fast development of parallel computation. However, gas solid coupling and the corresponding fluid flow solver remain immature. In this work, we propose a modified lattice Boltzmann approach to consider the effect of both the local solid volume fraction and the local relative velocity between particles and fluid, which is different from the traditional volume-averaged Navier-Stokes equations. A time-driven hard sphere algorithm is combined to simulate the motion of individual particles, in which particles interact with each other via hard-sphere collisions, the collision detection and motion of particles are performed at constant time intervals. The EMMS (energy minimization multiscale) drag is coupled with the lattice Boltzmann based discrete particle simulation to improve the accuracy. Two typical fluidization processes, namely, a single bubble injection at incipient fluidization and particle clustering in a fast fluidized bed riser, are simulated with this approach, with the results showing a good agreement with published correlations and experimental data. The capability of the approach to capture more detailed and intrinsic characteristics of particle fluid systems is demonstrated. The method can also be used straightforward with other solid phase solvers. (C) 2013 Elsevier Ltd. All rights reserved.
KeywordDiscrete Particle Simulation Lattice Boltzmann Method Computational Fluid Dynamics Fluidization Multiphase Flow Simulation
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ces.2013.06.019
Indexed BySCI
Language英语
WOS KeywordSMOOTHED PARTICLE HYDRODYNAMICS ; MFIX-DEM SOFTWARE ; NUMERICAL-SIMULATION ; FLUID-FLOWS ; EULERIAN SIMULATION ; PARTICULATE SYSTEMS ; DRAG COEFFICIENT ; COAL COMBUSTION ; MOMENT METHOD ; CFB RISER
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000323603700022
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13341
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, EMMS Grp, Beijing 100190, Peoples R China
2.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Wang, Limin,Zhang, Bo,Wang, Xiaowei,et al. Lattice Boltzmann based discrete simulation for gas-solid fluidization[J]. CHEMICAL ENGINEERING SCIENCE,2013,101(0):228-239.
APA Wang, Limin,Zhang, Bo,Wang, Xiaowei,Ge, Wei,&Li, Jinghai.(2013).Lattice Boltzmann based discrete simulation for gas-solid fluidization.CHEMICAL ENGINEERING SCIENCE,101(0),228-239.
MLA Wang, Limin,et al."Lattice Boltzmann based discrete simulation for gas-solid fluidization".CHEMICAL ENGINEERING SCIENCE 101.0(2013):228-239.
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