A particle-resolved heat-particle-fluid coupling model by DEM-IMB-LBM

作     者：Ming Xia Jinlong Fu Y.T.Feng Fengqiang Gong Jin Yu Ming Xia;Jinlong Fu;Y.T.Feng;Fengqiang Gong;Jin Yu

作者机构：Hunan Key Laboratory of Geomechanics and Engineering SafetyXiangtan UniversityXiangtan411105China Zienkiewicz Institute for ModellingData and AISwansea UniversitySwanseaSA18EPUK School of Civil EngineeringSoutheast UniversityNanjing211189China Fujian Research Center for Tunneling and Urban Underground Space EngineeringHuaqiao UniversityXiamen361021China 

出 版 物：《Journal of Rock Mechanics and Geotechnical Engineering》 (岩石力学与岩土工程学报（英文版）)

年 卷 期：2024年第16卷第6期

页      面：2267-2281页

核心收录：

学科分类：08[工学] 0818[工学-地质资源与地质工程] 080104[工学-工程力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：financially supported by the Natural Science Foundation of Hunan Province,China(Grant No.2022JJ30567) the support of EPSRC Grant(UK):PURIFY(EP/V000756/1) the Scientific Research Foundation of Education Department of Hunan Province,China(Grant No.20B557) 

主　　题：Particle-fluid interaction Heat transfer Discrete element method(DEM) Lattice Boltzmann method(LBM) Dirichlet-type thermal boundary Direct numerical simulation 

摘      要：Multifield coupling is frequently encountered and also an active area of research in geotechnical *** this work,a particle-resolved direct numerical simulation(PR-DNS)technique is extended to simulate particle-fluid interaction problems involving heat transfer at the grain *** this extended technique,an immersed moving boundary(IMB)scheme is used to couple the discrete element method(DEM)and lattice Boltzmann method(LBM),while a recently proposed Dirichlet-type thermal boundary condition is also adapted to account for heat transfer between fluid phase and solid *** resulting DEM-IBM-LBM model is robust to simulate moving curved boundaries with constant temperature in thermal *** facilitate the understanding and implementation of this coupled model for non-isothermal problems,a complete list is given for the conversion of relevant physical variables to lattice ***,benchmark tests,including a single-particle sedimentation and a two-particle drafting-kissing-tumbling(DKT)simulation with heat transfer,are carried out to validate the accuracy of our coupled *** further investigate the role of heat transfer in particle-laden flows,two multiple-particle problems with heat transfer are *** examples demonstrate that the proposed coupling model is a promising high-resolution approach for simulating the heat-particle-fluid coupling at the grain level.