What if you could control the highly disorganised and chaotic 3D turbulent flow that is formed after it goes past a bluff structure and could possibly lead it progressively into a 2D configuration and, for sufficient rotation speeds, eventually eliminate the randomness of the eddies to achieve a smooth flow?
The PhD researcher Icaro Carvalho and Professor Gustavo Assi have recently done so with small rods inserted around the main body and their work has just been published by the Journal of Fluids and Structures. You can check out the paper and some nice videos here.
The authors wish to acknowledge the resources provided by NDF, RCGI, FAPESP, CAPES and LNCC-SDumont.
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