Ahmad hasanzadeh fard - Faculty of Aerospace Engineering, K.N.Toosi University of Technology, Tehran, Iran.
Navid bagheri - Department of Energy Engineering, Graduate School of the Environment and Energy, Science and Research Branch,Islamic Azad University, Tehran, Iran.

Large Eddy Simulation is a novel numerical method for simulating convection-diffusion type of turbulent problems. It has direct advantage over other available methods. One advantage of large eddy simulation (LES) is that it can be easily parallelized and hence can be used to simulate turbulence fluid flow in multi-core computers using parallel computing. In this work we have used the Lattice Boltzmann method to simulate turbulent flow in a three-way section using the Smagorinsky–Lilly SGS model for Large Eddy Simuation. LES is widely used in simulating turbulent flows in industries because of its less computational needs compared to Direct Numerical Simulation (DNS) where the Kolmogorov Eddies have to be resolved. The present results are validated against those available in the literature and there is excellent agreement between them.

Large-eddy simulation (LES), Numerical method, Cavity, SGS model, turbulent flow