Effect of boundary layer state on the wake of a cantilevered square cylinder of aspect ratio 4

A comparative experimental study is conducted on the effect of the incoming boundary layer state on the near-wake of a surface-mounted square cylinder with a height-to-width aspect ratio (h/d) of 4. Two cases are considered: (i) an incoming laminar boundary layer (LBL) with relative thickness δ/h=0.053 at a nominal Reynolds number (Re) of 10 500, and (ii) an incoming turbulent boundary layer (TBL) with δ/h=0.18 at Re=12000. Planar particle …