CAS OpenIR
A CFD-DEM-IBM method for Cartesian grid simulation of gas-solid flow in complex geometries
Zhao, Peng1,2; Xu, Ji1; Ge, Wei1,2,3; Wang, Junwu1,2
2020-06-01
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume389Pages:14
Abstract

The use of CFD-DEM method to accurately simulate gas-solid flows in complex geometries is challenging, mainly due to the complexity related to the use of unstructured computational grids. In order to solve this problem, researchers have simulated gas-solid fluidized beds with complex geometries using CFD-DEM-IBM method with Cartesian grids. In present study the gas-solid flows in complex geometries were simulated using Cartesian grids following the basic idea of CFD-DEM-IBM method (De Jong et al., 2012), where the interactions between gas phase and complex geometries were firstly modelled using the immersed boundary method (IBM) implemented by Tukovic and Jasak (2012) in OpenFOAM (R). It was found that the computational efficiency is quite low. To improve the efficiency of the CFD-DEM-IBM solver, a new IBM method was then proposed by removing the neighboring immersed boundary cells from the interpolated extended stencil in the reconstruction of the velocity and pressure fields near the wall, and further proposing a new zero-gradient boundary condition to replace the original Neumann boundary condition for reconstructing the pressure field. Single-phase flow past a stationary cylinder, single-phase pipe flow, gas-solid flow in a cylindrical fluidized bed and fluidized bed with immersed tubes were simulated with four different IBM imposition methods to assess the accuracy and efficiency of sharp-interface CFD-DEM-IBM solver. It was shown that (i) the results of CFD-DEM-IBM simulations agree well with the reported experimental, analytical and/or numerical results available in literature; and (ii) the computational efficiency of newly proposed CFD-DEM-IBM solver is one or two order of magnitudes faster than that of the original IBM of Tukovic and Jasak (2012) in OpenFOAM (R), due to the fact that internal iterations are not needed anymore during the reconstruction of velocity and pressure fields.

KeywordCartesian Grid Fluidization Immersed Boundary Method Fluid Field Reconstruction Multiphase Flow Particle Technology
DOI10.1016/j.cej.2020.124343
Language英语
WOS KeywordDiscrete Particle Simulation ; Immersed-boundary Method ; Bubbling Fluidized-beds ; Numerical-simulation ; Full-loop ; Heavy-particles ; 2-fluid Model ; Drag Force ; Systems ; Accumulation
Funding ProjectNational Natural Science Foundation of China[21978295] ; National Natural Science Foundation of China[91834303] ; Key Research Program of Frontier Science, Chinese Academy of Sciences[QYZDJ-SSW-JSC029] ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21030700] ; Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2019-D-10] ; Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2019-A-07] ; National Key Research and Development Program of China[2017YFB0202203] ; Chinese Academy of Sciences (CAS)[XXH13506-301] ; Science Challenge Project[TZ2016001]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; Key Research Program of Frontier Science, Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; Fund of State Key Laboratory of Multiphase Complex Systems ; National Key Research and Development Program of China ; Chinese Academy of Sciences (CAS) ; Science Challenge Project
WOS IDWOS:000519528800001
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/39728
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Junwu
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Peng,Xu, Ji,Ge, Wei,et al. A CFD-DEM-IBM method for Cartesian grid simulation of gas-solid flow in complex geometries[J]. CHEMICAL ENGINEERING JOURNAL,2020,389:14.
APA Zhao, Peng,Xu, Ji,Ge, Wei,&Wang, Junwu.(2020).A CFD-DEM-IBM method for Cartesian grid simulation of gas-solid flow in complex geometries.CHEMICAL ENGINEERING JOURNAL,389,14.
MLA Zhao, Peng,et al."A CFD-DEM-IBM method for Cartesian grid simulation of gas-solid flow in complex geometries".CHEMICAL ENGINEERING JOURNAL 389(2020):14.
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