Comparison of Two Airfoils for Active Drag Reduction in Turbulent Flow

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 '20, 2021, pp 281-294 from Springer

Abstract: Abstract Active flow control of the turbulent flow over two airfoils of different shape is performed with the goal of increasing the overall aerodynamic efficiency. Large-eddy simulations are performed to investigate the impact of spanwise traveling transversal surface waves which are applied to a large percentage of the suction and the pressure side of the DRA2303 and NACA4412 airfoils at a chord based Reynolds number of $$\mathrm {Re}_c = 400,000$$ Re c = 400 , 000 . The results show a substantial decrease of the total integrated drag together with a slight increase of the lift. A detailed analysis reveals a decrease of the turbulent stresses and an attenuation of the boundary layer growth, resulting in an improvement of the lift-drag ratio for both airfoils.

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:978-3-030-80602-6_18

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DOI: 10.1007/978-3-030-80602-6_18

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