FORMATION FLIGHT AND WAKE VORTEX ENCOUNTERS WITH FULLY COUPLED HYBRID RANS/LES

Kurzfassung

The vision of establishing a simulation system for virtual flight in a realistic environment is solved by the coupling of two separate flow solvers in a bi-directional manner, a compressible Reynolds-Averaged Navier-Stokes (RANS) solver and an incompressible Large-Eddy Simulation (LES) solver. It enables the simulation of a flight through realistic atmospheric turbulence, including the effects on the aircraft and the roll-up of trailing vortices and their further development until final decay. This method is applied to aircraft encountering the wake of previous aircraft under different angles of attack, and formation flight as a special case. Moments experienced by the following aircraft are evaluated, the aerodynamics is investigated