Direct numerical simulation of turblent flow in porus media by lattice boltzmann method

摘要

A new scheme to calculate high-Reynolds number flow by LBM has been proposed and its performance was demonstrated in a direct numerical simulation of turblent flow in porus media where 4 cylinders are placed regularly. The calculation could predict drag coefficient in the range Reynolds number up to 2000. It was made clear that turbulence kinetic energy show large profiles at high shear layer rigion, whereas vorticies start to appear at a specific points of cylinder surface.