SACCON CFD Simulations Using Structured Grid Approaches

Abstract

A study of the aerodynamic behaviour of the Stability And Control Configuration wind tunnel model is presented. Both the sharp and round leading edge versions of the model are analysed in terms of the flow characteristics. A validation of the Reynolds Averaged NavierStokes predictions obtained using two block structured codes is made. Both static and dynamic cases are compared with wind tunnel measurements. The vortical flow features are described in detail for the range of conditions analysed. The predictions are in good agreement with the experiments at low angles of attack, whereas for higher incidences, α > 15◦, discrepancies are seen. A dual vortex structure is present in this region for both leading edge configurations resulting in a highly nonlinear aerodynamic behaviour.