Abstract
URANS-simulations were performed to investigate the influence of a convective vortex on the DLR F15 high-lift configuration. The vortex was generated artificially by a pitching motion of a NACA 0021 airfoil, which served as a gust generator. The simulations were performed at a Reynolds number of Re = 2\(\cdot 10^6\) and a Mach number of \(Ma=0.14\) to be consistent with the experimental setup at TU Braunschweig. Firstly, the accuracy of the TAU-Code for the simulations of the DLR F15 aerodynamic phenomena was investigated without a gust generator. Two kinds of turbulence models were applied to the high lift configuration at different angles of attack. The JHh-v2 Reynolds stress model and its replacement the JHh-v3 model were compared to the Menter SST eddy viscosity model. Secondly, the pitching motion of the gust generator was activated. The results were compared to wind tunnel data. Additionally, a parameter study was performed covering a range of artificially generated vortices by varying the pitching motion of the gust generator and different angles of attack of the DLR F15 configuration.
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Wawrzinek, K.P., Lutz, T., Krämer, E. (2016). Numerical Studies of Turbulent Flow Influence on a Two-Element Airfoil. In: Radespiel, R., Niehuis, R., Kroll, N., Behrends, K. (eds) Advances in Simulation of Wing and Nacelle Stall. FOR 1066 2014. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 131. Springer, Cham. https://doi.org/10.1007/978-3-319-21127-5_7
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DOI: https://doi.org/10.1007/978-3-319-21127-5_7
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