Modelling flow over a backward-facing step using the F.E.M. and the two-equation model of turbulence

Flow over a downstream-facing step is predicted using FEM. A two-equation model of turbulence is employed where the transport of turbulence kinetic energy and dissipation rate are depicted using transport-type equations, i.e., the two-equation model of turbulence. The results obtained are compared with other models and experimental results. Generally, the model was found to be under-predictive with regard to the reattachment length when previous empirical data was used in the transport equations.