Leeside Flowfield and Heat Transfer of a Delta Wing at IM = PO

Abstract

An experimental investigation was carried out to study the flowfield and heat-transfer characteristics of the leeside of an 80-deg swept delta wing at M^ -10, Flow visualization studies were complemented by extensive heat-transfer measurements to obtain the details of the flowfield. Attached vortex-free flows and flows with inboard and leading-edge separation were observed. The dominant contributor to the heating load on the leeside is seen to be the vortices generated due to the boundary-layer separation, either at the leading edge or inboard. The experimental results also show that the angle of attack for incipient and leading-edge separation is strongly dependent on freestream Reynolds number.