Assessment of engine/airframe aerodynamic performance: comparison between ONERA, DLR, NLR and Airbus
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In the frame of the EU funded Clean Sky 2 project ADEC, ONERA, DLR and NLR are contributing with Airbus to an investigation of the capability of current advanced CFD approaches to reproduce the flow around a complex configuration, representative of an airplane equipped with a UHBR engine (Ultra High Bypass Ratio), installed under the wing. The article will present a summary of the results of each partner, including a code-to-code comparison of 360° URANS computations needed to reproduce both the airframe, in cruise and high-lift conditions, and the nacelle with a geometrically fully modelled fan and OGV (Outlet Guide Vane). The code-to-code comparison is done between the structured solver of the elsA code, the ENFLOW solver (structured, developed by NLR) and the TAU solver (unstructured, developed by DLR).
