Effect of a Triangular Rib on a Flat Plate Boundary Layer
Journal of Fluids Engineering, Transactions of the ASME
The flow structure downstream of a triangular rib over a thin plate placed in a wind tunnel was experimentally investigated using a boundary layer hotwire anemometer. Flow and boundary layer characteristics, such as thickness, shape, and turbulence parameters, were studied at different freestream velocities and streamwise locations corresponding to ReX of 1.7 × 104-2.8 × 105 for plates without and with a leading edge rib. It was found that the boundary layer of the flow over a ribbed wall was 3-3.5 times thicker and had higher turbulence intensity and smaller turbulence length scales compared to its smooth wall counterpart.
Fouladi, F.; Henshaw, P.; and Ting, D. S.K.. (2016). Effect of a Triangular Rib on a Flat Plate Boundary Layer. Journal of Fluids Engineering, Transactions of the ASME, 138 (1).