Interactions of Asymmetric Vortices Over Chined Forebody/Wing Configuration at High Angles of Attack

Experiments were conducted to investigate asymmetric vortex interactions over a wing-body model with a chined forebody and a moderate swept wing at high angle of attackand zero angle of sideslip in a wind tunnel. The results show that forebody vortices can postpone breakdown of wing vortices and this effect weakens increasing with angle of attack due to bursting of forebody vortices. Breakdown of the higher vortex is postponed and breakdown of the lower vortex is promoted, which result in an increased and a decreased inducing effect on wing flow respectively. Thus forebody vortical flow has a dominant effect on wing vortical flow.