Amplitude and Period Effect on Heat Transfer in an Enclosure with Sinusoidal Heating from Below Using Lattice Boltzmann Method

作     者：Noureddine Abouricha Chouaib Ennawaoui Mustapha El Alami 

作者机构：LABSIPENational School of Applied SciencesChouaib Doukkali UniversityEl Jadida24000Morocco Green Tech Institute(GTI)Mohammed VI Polytechnic University(UM6P)Benguerir43150Morocco LPMMATDepartment of PhysicsFaculty of SciencesHassan II University of CasablancaCasablanca20100Morocco 

出 版 物：《Frontiers in Heat and Mass Transfer》 (热量和质量传递前沿（英文）)

年 卷 期：2023年第21卷第1期

页      面：523-537页

核心收录：

学科分类：080702[工学-热能工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：National Center for Scientific and Technical Research Centre National pour la Recherche Scientifique et Technique, CNRST 

主　　题：Sinusoidal heating square cavity lattice Boltzmann method natural convection heat transfer under floor heating 

摘      要：This work presents a simulation of the phenomena of natural convection in an enclosure with a variable heating regime by the lattice Boltzmann method(LBM).We consider a square enclosure of side H filled with air(Pr=0.71)and heated from below,with a hot portion of length L=0.8 H,by imposing a sinusoidal *** unheated segments of the bottom wall are treated as adiabatic,and one of the vertical walls features a cold region,while the remaining walls remain *** outcomes of the two-dimensional(2D)problem are depicted through isotherms,streamlines,the temperature evolution within the enclosure,and the Nusselt *** visualizations span various amplitude values“ain the interval[0.2,0.8],and of the period T0 for Ra=*** amplitude and period effect on the results is evaluated and *** amplitude of the temperature at the heart of the enclosure increases with the increase in *** also increases with the period(T0)of the imposed temperature,something that is not observable on the global Nusselt number.