Abstract:

Using the momentum exchange method, the Lattice Boltzmann model was adapted to calculate the force acting on the boundary. The two dimensional hexagonal Lattice Boltzmann model was used to simulate the Couette flows with the sawtooth boundary and evaluate the drag coefficient of the sawtooth boundary. The result indicated that the variation of the drag coefficient vs Reynolds number was the same as that of the plane boundary.

Key words: Lattice Boltzmann method;couette flow with a groove boundary;drag coefficient