M.-K. Yurt, A. Abdelmoula, J. John, I. Yavrucuk

This paper presents an extensible fluid-structure interaction (FSI) framework to investigate unsteady aerodynamic characteristics of pitching and dynamically camber morphing airfoils. An in-house finite element method-based Euler beam model was developed in this study to model the structure. The aerodynamic loads were computed with the computational fluid dynamics solver SU2. The coupling framework exploits the multiphysics coupling library preCICE for data exchange, converge accelerations, and implicit coupling logic. Both developed structural solver and coupling framework were validated with available data from the literature. The FishBAC deformation was applied from 75% to 90% of the chord length. An investigation of steady-state FSI coupling was conducted from Mach number 0.1 to 0.4 to show how the aeroelastic effects evolve for an actively morphing airfoil.The results showed that the camber morphing section of the presented structural model deformed in an aeroelastic manner under the influence of aerodynamic loads, and the morphed shape changed significantly. Moreover, unsteady aerodynamics and FSI effects on both pitching and actively morphing airfoils were investigated at Mach 0.4 and a pitching frequency of 7 Hz. This study showed the importance of considering aeroelastic effects on the unsteady aerodynamic characteristic. It was shown that the active camber morphing section could not be considered rigid. The aeroelastic effects became more pronounced with increasing Mach number and must be modeled.

49th European Rotorcraft Forum 2023, Bückeburg, 2023

Conference Paper

englisch

21,0 x 29,7 cm, 11 Pages

DGLR-Bericht, 2023, 2023-01, 49th European Rotorcraft Forum 2023 - Proceedings; S.1-11; 2023; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

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2023