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A study on periodic boundary condition in direct numerical simulation for gas-solid flow
Liu, Shiwen1,2; Liu, Xiaowen1,2; Chen, Feiguo1; Wang, Limin1; Ge, Wei1,2
2020
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume28Issue:1Pages:236-241
Abstract

Direct numerical simulation (DNS) of gas-solid flow at high resolution has been carried out by coupling the lattice Boltzmann method (LBM) for gas flow and the discrete element method (DEM) for solid particles. However, the body force periodic boundary condition (FPBC) commonly used to cut down the huge computational cost of such simulation has faced accuracy concerns. In this study, a novel two-region periodic boundary condition (TPBC) is presented to remedy this problem, with the flow driven in the region with body force and freely evolving in the other region. With simulation cases for simple circulating fluidized bed risers, the validity and advantages of TPBC are demonstrated with more reasonable heterogeneity of the particle distribution as compared to the corresponding case with FPBC. (C) 2019 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.

KeywordDirect Numerical Simulation Periodic Boundary Condition Two-region Periodic Boundary Condition Gas-solid Flow Heterogeneity
DOI10.1016/j.cjche.2019.04.025
Language英语
WOS KeywordScale ; Dynamics ; Model ; Drag ; Bed
Funding ProjectNational Natural Science Foundation of China[21821005] ; National Natural Science Foundation of China[91834303] ; Science Challenge Project[TZ2016001] ; Key Research Program of Frontier Science of the Chinese Academy of Sciences[QYZDJ-SSW-JSC029] ; Strategic Priority Research Program of the CAS[XDA21030700]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; Science Challenge Project ; Key Research Program of Frontier Science of the Chinese Academy of Sciences ; Strategic Priority Research Program of the CAS
WOS IDWOS:000519533600026
PublisherCHEMICAL INDUSTRY PRESS CO LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/39801
Collection中国科学院过程工程研究所
Corresponding AuthorChen, Feiguo; Ge, Wei
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
Recommended Citation
GB/T 7714
Liu, Shiwen,Liu, Xiaowen,Chen, Feiguo,et al. A study on periodic boundary condition in direct numerical simulation for gas-solid flow[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2020,28(1):236-241.
APA Liu, Shiwen,Liu, Xiaowen,Chen, Feiguo,Wang, Limin,&Ge, Wei.(2020).A study on periodic boundary condition in direct numerical simulation for gas-solid flow.CHINESE JOURNAL OF CHEMICAL ENGINEERING,28(1),236-241.
MLA Liu, Shiwen,et al."A study on periodic boundary condition in direct numerical simulation for gas-solid flow".CHINESE JOURNAL OF CHEMICAL ENGINEERING 28.1(2020):236-241.
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