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Drag Reduction and Transition Delay of Bluff Body Flows by Passive Boundary Layer Control

[+] Author Affiliations
Charles-Henri Bruneau, Iraj Mortazavi

Université Bordeaux 1, Talence, France

Paper No. FEDSM2002-31037, pp. 1319-1324; 6 pages
  • ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
  • Volume 1: Fora, Parts A and B
  • Montreal, Quebec, Canada, July 14–18, 2002
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3615-0 | eISBN: 0-7918-3600-2
  • Copyright © 2002 by ASME


The aim of this work is to control the flow around obstacles by a passive strategy. The idea is to modify the boundary flow in order to delay the instabilities and reduce the drag forces and the vorticity production. The target is achieved using a porous interface between the solid body and the fluid. This is easily handled by means of a penalization method that allows to modelize different media by changing the penalization parameter. The results for low and high transitional flows around a 2D square show that the porous interface is an efficient tool to control the flow dynamics. In addition, a drag reduction up to 28% is observed.

Copyright © 2002 by ASME



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