Title of article :
A Three-Dimension Double-Population Thermal Lattice BGK Model for Simulation of Natural Convection Heat Transfer in a Cube
Author/Authors :
Azwadi, C. S. Nor Universiti Technologi Malaysia - Faculty of Mechanical Engineering - Department of Thermo-Fluids, Malaysia , Tanahashi, T. Keio University - School for Open and Environmental Systems - Department of Mechanical Engineering, Japan
Abstract :
In this paper, a double-population thermal lattice Boltzmann was applied to solve three dimensional, incompressible thermal uid ow problem. The simplest lattice BGK D3Q6 model was proposed to determine the temperature eld while D3Q15 or D3Q19 for the density and velocity elds. The simulation of natural convection in a cubic cavity with Prandtl number 0.71 and Rayleigh number ranging from 103 to 105 were carried out and compared with the published results in literature. It was observed that the combination of D3Q6 and D3Q19 gave better numerical stability and accuracy compared to D3Q6 with D3Q15 for the simulation at high Rayliegh number.
Keywords :
Double population , lattice Boltzmann , distribution function , natural convection
Journal title :
Matematika
Journal title :
Matematika
