The wake of a surface-mounted finite-height square prism of sub-critical aspect ratio AR = 3 was studied experimentally in a low-speed wind tunnel at a Reynolds number of Re = 3.7×104. The ratio of the boundary layer thickness on the ground plane, to the width of the prism, was δ/D = 1.5. The incidence angle of the prism was varied from α = 0° to 45°. Wake mean velocity measurements were made in vertical planes normal to and parallel to the main flow direction using a seven-hole pressure probe. As the prism is rotated from α = 0° to 45°, the mean wake progressively widens and the maximum streamwise extent of the mean recirculation zone increases. The mean streamwise tip vortex pair is symmetric at 0° and 45°, but becomes strongly asymmetric at intermediate α, where the tip vortex is found higher above the ground plane on the wider side of the wake. The wake and tip vortex asymmetry is most pronounced near the critical incidence angle.
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ASME/JSME/KSME 2015 Joint Fluids Engineering Conference
July 26–31, 2015
Seoul, South Korea
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5721-2
PROCEEDINGS PAPER
On the Effects of Incidence Angle on the Mean Wake of a Surface-Mounted Finite-Height Square Prism
Ayodele Ogunremi,
Ayodele Ogunremi
University of Saskatchewan, Saskatoon, SK, Canada
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David Sumner
David Sumner
University of Saskatchewan, Saskatoon, SK, Canada
Search for other works by this author on:
Ayodele Ogunremi
University of Saskatchewan, Saskatoon, SK, Canada
David Sumner
University of Saskatchewan, Saskatoon, SK, Canada
Paper No:
AJKFluids2015-15011, V001T15A001; 9 pages
Published Online:
November 20, 2015
Citation
Ogunremi, A, & Sumner, D. "On the Effects of Incidence Angle on the Mean Wake of a Surface-Mounted Finite-Height Square Prism." Proceedings of the ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. Volume 1: Symposia. Seoul, South Korea. July 26–31, 2015. V001T15A001. ASME. https://doi.org/10.1115/AJKFluids2015-15011
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