33th Congress of the International Council of the Aeronautical Sciences

03.1 - Aerodynamics – CFD Methods and Validation

AERONAUTICAL CFD AND TURBULENCE - PROGRESS AND CHALLENGES PART 2

A. Rizzi¹, D. Henningson¹; ¹KTH, Sweden

This lecture addresses how CFD simulations have been used for predicting separated flows, and the associated aerodynamic performance, throughout the flight envelope, giving special focus to actual aircraft. It entails a summary of the physics of flow separation that is especially difficult to model numerically along with results from DNS studies that shed new light on the physics and that lay out a path for substantial progress. Among the cases reviewed are: turbulent separation from a smooth-surface including short laminar-turbulent bubbles, Incipient vortex separation including bursting and buffet onset and stalling characteristics.


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