首页|Numerical study of convective heat transfer in static arrangements of particles with arbitrary shapes:A monolithic hybrid lattice Boltzmann-finite difference-phase field solver

Numerical study of convective heat transfer in static arrangements of particles with arbitrary shapes:A monolithic hybrid lattice Boltzmann-finite difference-phase field solver

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A compressible lattice Boltzmann-finite difference method is extended by the phase-field approach into a monolithic scheme to study fluid flow and heat transfer through regular arrangements of solid bodies of circular,elliptical and irregular shapes.The advantage of using the phase-field method is demon-strated both in its simplicity of accounting for flow and thermal boundary conditions at solid surfaces with irregular shapes and in the capability of generating such complex-shaped objects.For an array of discs,numerical results for the overall solid-to-gas heat transfer rate are validated via experiments on flow through arrays of hot cylinders.The thus validated compressible LB-FD-PF hybrid scheme is used to study the dependence of heat transfer on flow and thermal boundary conditions(Reynolds number,temperature difference between the hot solid bodies and the inlet gas),porosity as well as on the shape of solid objects.Results are rationalized in terms of the residence time of the gas close to the solid body and downstream variations of gas velocity and temperature.Perspective for further applications of the proposed methodology are also discussed.

Lattice Boltzmann methodFinite difference schemeConvective heat transferDiffuse interfaceThermal compressible flow

Reza Namdar、Mohammadhassan Khodsiani、Hesameddin Safari、Tanya Neeraj、Seyed Ali Hosseini、Frank Beyrau、Beno?t Fond、Dominique Thévenin、Fathollah Varnik

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Interdisciplinary Centre for Advanced Materials Simulation(ICAMS),Ruhr-University Bochum,Bochum,44801,Germany

Laboratory of Technical Thermodynamics,University of Magdeburg"Otto von Guericke",Magdeburg,39106,Germany

Laboratory of Fluid Dynamics and Technical Flows,University of Magdeburg"Otto von Guericke",Magdeburg,D-39106,Germany

Department of Mechanical and Process Engineering,ETH Zurich,Zurich,8092,Switzerland

ONERA The French Aerospace Lab,Department of Aerodynamics,Aeroelasticity and Acoustics(DAAA),Paris-Saclay University,Meudon,92190,France

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Deutsche Forschungsgemeinschaft(DFG,German Research Foundation)

422037413-CRC/TRR 287

2024

10.1016/j.partic.2023.03.020

颗粒学报(英文版)
中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD
影响因子：0.632
ISSN：1674-2001
年,卷(期)：2024.85(2)
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