Vortex interactions between chined forebody and strake

Two configurations, the wing-body and strake wing-body, were experimentally studied to determine the effect of the strake on the vortex interactions between the chined forebody and wing. The vortex system over the chined forebody was influenced at high angles of attack while adding a small strake in front of the wing. The chined-forebody vortex twisted together with the strake vortex and formed forebody-strake vortex and moved outwards along the wing span. The forebody-strake vortex was found to induce a large suction peak on the wing, which can be beneficial to the lift-enhancement for the aircraft. The smoke flow visualization results from the front to rear sections for the wing-body and strake wing-body configurations. The Reynolds number for the flow visualization was low as the freestream velocity cannot be too high to obtain clear smoke flow pictures. The Raynolds number have very little effect on the loads distribution of the configurations.