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.
Effect of a Triangular Rib on a Flat Plate Boundary Layer
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received February 26, 2015; final manuscript received July 23, 2015; published online August 21, 2015. Assoc. Editor: D. Keith Walters.
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Fouladi, F., Henshaw, P., and Ting, D. S. (August 21, 2015). "Effect of a Triangular Rib on a Flat Plate Boundary Layer." ASME. J. Fluids Eng. January 2016; 138(1): 011101. https://doi.org/10.1115/1.4031161
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