Impact of Two Vortex Rings with an Inclined Solid Surface

Abstract

This study numerically investigates the interaction between multiple thin vortex rings and an inclined solid surface at Reynolds numbers of 585 and 1170. The flow mechanics can be considered partially representative of a helicopter rotor in ground effect. Although a significant simplification to the helicopter downwash, vortex ring interactional dynamics provide insight into the fundamental flow features that underlie the complex flow field.