Stationary state computational fluid dynamics for aero-propulsion devices

Views of turbulent flows are presented, and alternative methods of representing such flows are described. These approaches encompass stationary and non-stationary treatments. The needs of the aerospace industry are described and it is shown how these influence the choice of turbulence treatment for engineering use. A flow experiment that has a non-stationary nature is selected from the literature. Calculations made by both turbulence approaches were compared to this experiment. It is concluded that the stationary state approach gives a good representation of the experimental flow, and that time-mean predictions of flow are a reasonable engineering goal. The non-stationary approach shows the potential of making contributions to the understanding of turbulence.