DLR Results of the Seventh AIAA Computational Fluid Dynamics Drag Prediction Workshop

Abstract

A summary of the German Aerospace Research Center's results from the seventh AIAA Computational Fluid Dynamics Drag Prediction Workshop held in Chicago, IL, 25-26 June 2022, is presented. The workshop had a focus on predicting the effect of shock-induced separation on the variation of lift and pitching moment with increasing angle-of-attack at transonic conditions and has used NASA's Common Research Model civil transport aircraft configuration as the reference geometry. DLR has contributed to three out of the six workshop test cases. These include a grid convergence study on the wing-body configuration (Test Case 1a), an angle-of-attack sweep using preset aero-elastic wing deflections obtained from a wind tunnel test (Test Case 2a), and a coupled aero-structural simulation, where wing deflections are computed through a coupling to a computational structural analysis (Test Case 6).