This paper reports an experimental investigation on the response of a planar wake past a flat plate to various upstream flow conditions. A tripping wire was placed on the upper side of the flat plate downstream the leading edge which resulted in asymmetric boundary layers. The near wake asymmetry was compared to their symmetrical counterpart at two different Reynolds numbers. The near wake dynamics were investigated using hotwire anemometry and flow visualizations. Self-similarity of the asymmetrical wakes was established. Asymmetry seemed to have the largest effect on the convection velocity of the large structures in the asymmetric laminar-turbulent wake.
Near Field Development of Planar Wakes Under the Effect of Asymmetric Initial Conditions
Royal Military College of Canada,
Kingston, ON K7K 7B4, Canada;
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received September 17, 2014; final manuscript received March 17, 2015; published online May 19, 2015. Assoc. Editor: Mark F. Tachie.
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Momayez, L., Dghim, M., Ferchichi, M., and Graveline, S. (May 19, 2015). "Near Field Development of Planar Wakes Under the Effect of Asymmetric Initial Conditions." ASME. J. Fluids Eng. September 2015; 137(9): 091201. https://doi.org/10.1115/1.4030342
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