Large eddy numerical simulation of flows over a backward-facing step

Large eddy simulation cooperated with a physical fractional-step method was applied to simulate steady flows over a backward-facing step. Comparisons with experimental and other model results indicate that the present model is capable of simulating turbulent flows. The simulated results by the proposed model agree well with the experimental data. The research shows that the large eddy simulation theory has powerful capacity in simulation of microstructures of turbulent flows, and can be widely applied to the solution of real engineering problems.