In the present study, we show how drag reduction of a bluff body can be achieved on a rational basis of a force theory. The force theory indicates where is the best location to apply the surface control to minimize the drag on the body. In particular, the method of drag reduction is illustrated for flow around a circular cylinder. It is shown that drag reduction for the circular cylinder can be as efficient as 46.5%.
Drag Reduction of Bluff Bodies by Surface Control Based on a Force Theory
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Yang, S, Chang, CC, Chu, C, Liao, S, & Chern, RL. "Drag Reduction of Bluff Bodies by Surface Control Based on a Force Theory." Proceedings of the ASME/JSME 2007 5th Joint Fluids Engineering Conference. Volume 2: Fora, Parts A and B. San Diego, California, USA. July 30–August 2, 2007. pp. 1413-1418. ASME. https://doi.org/10.1115/FEDSM2007-37437
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