Title: Numerical investigation of SD7062 airfoil with single-slotted flap for different flight conditions

Authors: Berkan Anılır; Dilek Funda Kurtuluş

Addresses: Aerospace Engineering Department, Middle East Technical University, Ankara 06800, Turkey ' Aerospace Engineering Department, Middle East Technical University, Ankara 06800, Turkey

Abstract: The two-dimensional numerical simulations using unsteady Reynolds-averaged Navier-Stokes are performed to investigate the aerodynamic performance of SD7062 airfoil with a 0.30c single-slotted flap at cruise, takeoff, and landing conditions for various angles of attack corresponding to pre-and post-stall regimes. The time-averaged aerodynamic characteristics of the configurations are compared to the different angles of attack results and other configurations. The maximum lift coefficient value of 3.302 is obtained with 35° flap deflection for landing condition (L-2 configuration) at α = 14°. The flow is fully attached to the flap for all deployed flap configurations except L-3 configuration at the stall angle of attack. The gap sizes from 0.010c to 0.037c with constant overlap size of -0.004c and 40° flap deflection at landing condition α = 0° and α = 12° are analysed to achieve the optimum gap size. It is found to be 0.016c.

Keywords: single-slotted flap; SD7062; computational fluid dynamics; CFD; flap gap size.

DOI: 10.1504/PCFD.2023.134895

Progress in Computational Fluid Dynamics, An International Journal, 2023 Vol.23 No.6, pp.338 - 351

Received: 18 Mar 2022
Accepted: 10 Aug 2022
Published online: 16 Nov 2023 *

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