Fig. 4

Skin friction lines (solid red lines) and surface pressure gradient lines (dashed blue lines) on the 70^o-delta wing at AoA of 20^o, the Mach number of 0.55 and the total pressure of 100 kPa: a global view, and b zoomed-in view of the region of interest near the left corner of the wing. From Liu et al. [22]