A novel coupling method for unresolved CFD-DEM modeling

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Zhang, Jingyuan,1992NTNU Norwegian University of Science and Technology, Norway,Norges teknisk-naturvitenskapelige universitet (NTNU),Norwegian University of Science and Technology (NTNU),Chalmers tekniska högskola,Chalmers University of Technology (author)

A novel coupling method for unresolved CFD-DEM modeling

Article/chapterEnglish2023

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Elsevier Ltd,2023
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LIBRIS-ID:oai:DiVA.org:ri-65504
https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-65504URI
https://doi.org/10.1016/j.ijheatmasstransfer.2022.123817DOI
https://research.chalmers.se/publication/534243URI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

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Funding details: Norges Forskningsråd, 267957, 294679; Funding details: Centre for Combustion Science and Technology, Faculty of Engineering, LTH, CECOST; Funding text 1: The authors acknowledge support from the Research Council of Norway and a number of industrial partners through the project BioCarbUp (294679) and Project GrateCFD (267957). NTNU IDUN/EPIC computing cluster provided high-performance computational resources for CFD simulations. Henrik Ström gratefully acknowledges co-financing from the Centre for Combustion Science and Technology (CECOST) and the Swedish Gasification Centre (SFC).
In CFD-DEM (computational fluid dynamics-discrete element method) simulations particles are considered Lagrangian point particles. The details of the flow near the particle surface are therefore not fully resolved. When the particle scale is larger than the resolved flow scale, the coupling between the CFD model and the DEM model is critical. An effective coupling scheme should minimize the risk of artificial influences on the results from choices of numerical parameters in implementations and consider efficiency and robustness. In this work, a novel coupling method is developed. The method includes both the smoothing of the particle data and the sampling of the gas phase quantities. The smoothing employs the diffusion-based method. The gas sampling method can reconstruct the filtered fluid quantities at the particle center. The sampling method is developed based on the diffusion-based method with higher efficiency. The new method avoids mesh searching and it can be easily implemented in parallel computing. The developed method is validated by the simulation of a forced convection experiment for a fixed bed with steel spheres. With the well-posed grid-independent coupling scheme, the simulation results are in good agreement with the experimental measurements. The coupling effects and the computational cost are discussed in detail.

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Maskinteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Maskinteknik Energiteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Energy Engineering hsv//eng
NATURVETENSKAP Matematik Beräkningsmatematik hsv//swe
NATURAL SCIENCES Mathematics Computational Mathematics hsv//eng
TEKNIK OCH TEKNOLOGIER Maskinteknik Strömningsmekanik och akustik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Fluid Mechanics and Acoustics hsv//eng
CFD
Coupling
DEM
Fixed bed
Forced convection
Diffusion in liquids
Efficiency
Coupling methods
Coupling scheme
Discrete element method simulations
Discrete elements method
Lagrangian points
Method model
Point-particles
Sampling method
Computational fluid dynamics

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Li, TianRISE,Brand och Säkerhet,NTNU Norwegian University of Science and Technology, Norway,Chalmers tekniska högskola,Chalmers University of Technology,Norges teknisk-naturvitenskapelige universitet (NTNU),Norwegian University of Science and Technology (NTNU)(Swepub:cth)ltian (author)
Ström, Henrik,1981Chalmers University of Technology, Sweden,Chalmers tekniska högskola(Swepub:cth)k00sthe (author)
Wang, BoyaoNTNU Norwegian University of Science and Technology, Norway,Norges teknisk-naturvitenskapelige universitet (NTNU),Norwegian University of Science and Technology (NTNU) (author)
Løvås, TereseNTNU Norwegian University of Science and Technology, Norway,Norges teknisk-naturvitenskapelige universitet (NTNU),Norwegian University of Science and Technology (NTNU) (author)
NTNU Norwegian University of Science and Technology, NorwayNorges teknisk-naturvitenskapelige universitet (NTNU) (creator_code:org_t)

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In:International Journal of Heat and Mass Transfer: Elsevier Ltd2030017-93101879-2189

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