Lattice Boltzmann Simulation of Magnetic Field Effect on Electrically Conducting Fluid at Inclined Angles in Rayleigh-Bénard Convection

作     者：T.Ahmed S.Hassan M.F.Hasan M.M.Molla M.A.Taher S.C.Saha 

作者机构：Department of Mathematics and PhysicsNorth South UniversityDhaka1229Bangladesh Center for Applied Scientific Computing(CASC)North South UniversityDhaka1229Bangladesh Department of Engineering&Physical SciencesLa Trobe UniversityMelbourneVIC 3086Australia Department of MathematicsDhaka University of Science and TechnologyGazipurBangladesh School of Mechanical and Mechatronic EngineeringUniversity of Technology SydneyUltimoAustralia 

出 版 物：《Energy Engineering》 (能源工程（英文）)

年 卷 期：2021年第118卷第1期

页      面：15-36页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：The second author would like to acknowledge to the North South University for the partial support as a Research Assistant(Grant No.NSU-RP-18-067) 

主　　题：Average rate of heat transfer Hartmann number lattice Boltzmann method magnetic field effect Rayleigh-Bernard convection 

摘      要：The magneto-hydrodynamics(MHD)effect is studied at different inclined angles in Rayleigh-Bénard(RB)convection inside a rectangular enclosure using the lattice Boltzmann method(LBM).The enclosure is filled with electrically conducting fluids of different *** characteristics are defined by Prandtl number,*** considered Pr values for this study are 10 and *** influence of other dimensionless parameters Rayleigh numbers Ra=10^(3);10^(4);10^(5);10^(6) and Hartmann numbers Ha=0,10,25,50,100,on fluid flow and heat transfer,are also investigated considering different inclined anglesφof magnetic field by analyzing computed local Nusselt numbers and average Nusselt *** results of the study show the undoubted prediction capability of LBM for the current *** simulated results demonstrate that the augmentation in heat transfer is directly related to Ra values,but it is opposite while observing the characteristics of Ha ***,it is also found thatφhas a significant impact on heat transfer for different ***,isotherms are found to be always parallel to the horizontal axis at Ra=10^(3) as conduction overcomes the convection in the heat transfer,but this behaviour is not seen at Ra=10^(4) when Ha***,at Ra=10^(6),oscillatory instability appears but LBM is still able to provide a complete map of this predicted beha*** appropriate validation with previous numerical studies demonstrates the accuracy of the present approach.