Finite volume-lattice Boltzmann modeling of time-dependent Fl ows

In this paper, a stable nite volume formulation of the lattice Boltzmann method is used to study time-dependent ows. For simulation purposes, a cell-centered scheme is implemented to discretize the convection operator and weighting factors are used as ux correctors to enhance the stability. Also, additional lattices at the edge of each boundary cell are used, which allow a much better description of the actual geometrical shape. Compared with previous nite volume formulations, the proposed approach resulted in a wider domain of stability and faster convergence. The scheme is validated through simulations on ow over a circular cylinder and mixing layer ow. The results show that the method is a promising scheme for simulating time-dependent ows.