RT Journal Article
T1 Characterization of Aerodynamic Forces on Wings in Plunge Maneuvers
A1 Moriche Guerrero, Manuel
A1 Sedky, Girguis
A1 Jones, Anya R
A1 Flores Arias, Óscar
A1 García-Villalba Navaridas, Manuel
AB We present experiments and simulations of plunging maneuvers of large amplitude, for velocity ratios of G=1 and 2, defined as the ratio between the peak plunge velocity and the freestream velocity. We explore the effect of the airfoil shape by considering a NACA 0012 wing and a flat plate. The experiments are performed with wings with aspect ratios of 4 and 4.86, whereas the simulations are performed using a model of an infinite-aspect-ratio wing. We report the time evolution of the force coefficients and flow visualizations. A good qualitative agreement is found between experiments and simulations, with small discrepancies in the maximum and minimum lift coefficients observed during the maneuvers and somewhat larger discrepancies during the postmaneuver phase. It is found that the airfoil shape has a small effect on the lift coefficient but a somewhat larger effect on the drag coefficient. We also perform a force decomposition analysis to relate vortical structures to the force on the wings, providing a quantitative measurement of the effect of the leading-edge vortex and trailing-edge vortex on the peak aerodynamic forces.
PB American Institute of Aeronautics and Astronautics
SN 0001-1452
YR 2021
FD 2021-02-01
LK https://hdl.handle.net/10016/32782
UL https://hdl.handle.net/10016/32782
LA eng
NO This work was partially supported by the State Research Agency ofSpain (AEI) under grant DPI2016-76151-C2-2-R, including fundingfrom the European Regional Development Fund and the U.S. AirForce Office of Scientific Research under grant FA9550-16-1-0508.The computations were partially performed at the supercomputerPicasso from the Red Española de Supercomputación in activityFI-2019-1-0030.
DS e-Archivo
RD 1 sept. 2024