In this paper the turbulent natural convection flow is investigated through Large Eddy
Simulation (LES) turbulence model, which is applied in Lattice Boltzmann, and the results for
high Rayleigh numbers between 106 and 109 are represented. Air with Pr=0.71 is considered in this
study. In this investigation we have tried to present Large-eddy turbulence model by Lattice
Boltzmann Method (LBM) with a clear and simple statement. The results confirm that this method
is in acceptable agreement with other verifications of such a flow. The effects of increase in
Rayleigh number are displayed on streamlines, isotherm counters, local Nusselt number and
average Nusselt number.
کلید واژگان :
Turbulent natural convection, Large Eddy Simulation, Lattice Boltzmann Method
