Article (Scientific journals)
Immersed boundary method for considering lubrication effects in the CFD-DEM simulations
HASSANZADEH SARAEI, Sina; PETERS, Bernhard
2023In Powder Technology, 426, p. 118603
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Keywords :
Computational fluid dynamics; Discrete element method; Immersed boundary method; Lubrication force; CFD-DEM; Closest distance; DEM Simulation; Discrete elements method; High-accuracy; Hydrodynamic interaction; Immersed boundary methods; Lubrication effect; Lubrication forces; Mesh resolution; Chemical Engineering (all); General Chemical Engineering
Abstract :
[en] Although the CFD-DEM simulations could predict the long-range hydrodynamic interaction with high accuracy, they face difficulty in the close distance between particles because mesh resolution is not fine enough to capture the lubrication effects. As a remedy, we used a variant of Immersed Boundary method in our CFD solver to model a problem as a fully resolved simulation. Then, we developed a second-order boundary layer reconstruction approach to increase the accuracy of the immersed boundary method. Furthermore, for the first time and in the present work, we considered how shared cells between the particles need to be treated in the simulation of two approaching particles. Moreover, we investigated the relationship between mesh resolution and time step size on the accuracy of the calculated force. We found a specific range for this ratio to capture the correct short-range hydrodynamic interactions.
Disciplines :
Mechanical engineering
Author, co-author :
HASSANZADEH SARAEI, Sina  ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
PETERS, Bernhard ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
External co-authors :
no
Language :
English
Title :
Immersed boundary method for considering lubrication effects in the CFD-DEM simulations
Publication date :
August 2023
Journal title :
Powder Technology
ISSN :
0032-5910
eISSN :
1873-328X
Publisher :
Elsevier B.V.
Volume :
426
Pages :
118603
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
ConMic- Mac
Funders :
Fonds National de la Recherche Luxembourg
Funding number :
INTER/DFG/20/14843353 - ConMic- Mac
Funding text :
This research was funded by the Luxembourg National Research Fund (FNR) , grant reference ( INTER/DFG/20/14843353 - ConMicMac). For the purpose of open access, and in fulfilment of the obligations arising from the grant agreement, the author has applied a Creative Commons Attribution 4.0 International (CC BY 4.0) license to any Author Accepted Manuscript version arising from this submission. As a member of the XDEM group, we used the XDEM code as a DEM solver under the supervision of Professor Peters. We would like to acknowledge all previous colleagues who contributed to the XDEM code, its coupling interface, and immersed boundary method.
Commentary :
Since it is not an open-access article, we could not share it internally inside the university. I put the link to the article, which could be downloaded. https://www.sciencedirect.com/science/article/pii/S003259102300387X
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