Analysis of CFD Methods in High Lift Configurations

The AIAA High Lift Prediction Workshop is a joint effort between industry and academia researchers to assess current computing capabilities of CFD software in aircraft take-off and landing configurations. In this study, CFD results obtained from the OVERFLOW2 CFD solver using different turbulence models, aircraft configurations, and different structured mesh refinement levels were compared against PIV velocity profile data. The goal was to gain a better understanding of how well CFD captures the flow phenomena and to determine best practices for simulating high lift configurations. Velocity profiles were extracted at 11 locations on the wing at three different angles of attack. As the extraction line moved further aft and outboard, CFD’s prediction of the velocity profile became less accurate. The largest discrepancies were in areas with large slat wakes. The results will show the strengths and weaknesses of current CFD best practices in analyzing aircraft high lift aerodynamics