Numerical simulation of a longitudinal counter-rotating vortex pair in interaction with ground

Any object moving in the air leaves behind it a more or less organized wake vortex. In case of the aircraft, this wake results in a rolling up of flow starting from the ends of the wings. It is due to the lift of each wing and the generated vortex will be as much more intense as the lift increases. It can constitute a danger to another aircraft that flies in this wake, especially during takeoff and landing. In this case the wake vortex trajectories and strengths are altered by ground interactions. This study presents the results of a Large Eddy Simulation of wake vortex in ground effect providing the vorticity flux behavior.