Drag Reduction by Surface Actuation

Marian Albers (), Matthias Meinke and Wolfgang Schröder
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Marian Albers: RWTH Aachen University, Institute of Aerodynamics
Matthias Meinke: RWTH Aachen University, Institute of Aerodynamics
Wolfgang Schröder: RWTH Aachen University, Institute of Aerodynamics

A chapter in High Performance Computing in Science and Engineering '19, 2021, pp 295-308 from Springer

Abstract: Abstract The flow over an DRA2303 wing section is controlled by spanwise traveling transversal surface waves. The actuated flow field is investigated by large-eddy simulation. Approximately $$74{\%}$$ 74 % of the solid surface is deflected by a sinusoidal space- and time-dependent function in the wall-normal direction. Viscous drag reduction by $$8.6{\%}$$ 8.6 % with a strong decrease of skin-friction in the favorable pressure gradient region and an overall drag decrease by $$7.5{\%}$$ 7.5 % are achieved. Furthermore, a slight increase in lift is obtained for the external flow over a realistic geometry.

Keywords: Turbulent boundary layer; Drag reduction; Airfoil; Transversal traveling surface wave; Large-eddy simulation; Active flow control (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-030-66792-4_20

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DOI: 10.1007/978-3-030-66792-4_20

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