CAS OpenIR
A critical comparison of two-fluid model, discrete particle method and direct numerical simulation for modeling dense gas-solid flow of rough spheres
Bian, Wei1,2; Chen, Xizhong1; Wang, Junwu1,2
2019-12-31
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume210Pages:17
Abstract

Interphase drag coefficient is a critical input in two-fluid model (TFM) and discrete particle method (DPM). In this study, extensive TFM and DPM simulations were carried out to study of the hydrodynamics of gas-solid flows of monodisperse, rough particles in a dense fluidized bed using fourteen drag coefficient correlations available in literature, the simulation results were then compared to the direct numerical simulation (DNS) and experimental data of Tang et al. (2016). It was shown that (i) all TFM and DPM simulations result in a lower bed expansion rate than those of DNS and experiment, which indicates that the true interphase drag force is underestimated by all fourteen drag coefficient correlations; (ii) all DPM simulations can correctly capture, at least in a qualitative sense, the main hydrodynamic features obtained from DNS, but some TFM simulations with the exactly same drag coefficients show anomalous phenomena. This is not an indicator of the failure of the used drag coefficients but might be a sign of the deficiency of the used particle phase stress model in this specific situation; (iii) the time-averaged differential pressure drops of DPM and TFM simulations agree well with DNS results, but the characteristic frequency of pressure fluctuation found in DNS is overestimated by a factor of 2-3 by all DPM and TFM simulations; and (iv) the magnitude of local and global granular temperatures of TFM, DPM and DNS are all in a fair agreement, but the degree of the anisotropy of both local and global granular temperature found in DNS is systematically underestimated by DPM and TFM, especially, the local granular temperature in TFM simulations is inherently isotropic due to the fundamental assumption of the used kinetic theory. This study highlights the need of a better interphase drag coefficient and a better particle phase stress model for modeling dense gas-solid flow. (C) 2019 Elsevier Ltd. All rights reserved.

KeywordDrag Force Direct Numerical Simulation Discrete Particle Method Two-fluid Model Fluidization Multiphase Flow
DOI10.1016/j.ces.2019.115233
Language英语
WOS KeywordComputational Fluid-dynamics ; Theory-based Predictions ; Emms Drag Model ; Kinetic-theory ; Reynolds-number ; Granular Temperature ; Heat-transfer ; Eulerian Simulation ; Bidisperse Arrays ; Past Monodisperse
Funding ProjectInnovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A13] ; National 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-2019A-07] ; Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2019-D-10]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationInnovation Academy for Green Manufacture, Chinese Academy of Sciences ; National 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
WOS IDWOS:000491956400002
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/39017
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, POB 353, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Bian, Wei,Chen, Xizhong,Wang, Junwu. A critical comparison of two-fluid model, discrete particle method and direct numerical simulation for modeling dense gas-solid flow of rough spheres[J]. CHEMICAL ENGINEERING SCIENCE,2019,210:17.
APA Bian, Wei,Chen, Xizhong,&Wang, Junwu.(2019).A critical comparison of two-fluid model, discrete particle method and direct numerical simulation for modeling dense gas-solid flow of rough spheres.CHEMICAL ENGINEERING SCIENCE,210,17.
MLA Bian, Wei,et al."A critical comparison of two-fluid model, discrete particle method and direct numerical simulation for modeling dense gas-solid flow of rough spheres".CHEMICAL ENGINEERING SCIENCE 210(2019):17.
Files in This Item:
File Name/Size DocType Version Access License
A critical compariso(5040KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Bian, Wei]'s Articles
[Chen, Xizhong]'s Articles
[Wang, Junwu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Bian, Wei]'s Articles
[Chen, Xizhong]'s Articles
[Wang, Junwu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Bian, Wei]'s Articles
[Chen, Xizhong]'s Articles
[Wang, Junwu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.