Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Strategies to evaluate the results of a CFD-based solution to investigate the aeroelastic dynamics of a typical section airfoil
Submission Author:
Bianca Taís Visoná Carnielo , SP
Co-Authors:
Bianca Taís Visoná Carnielo, ALUISIO PANTALEAO, Douglas Bueno
Presenter: Bianca Taís Visoná Carnielo
doi://10.26678/ABCM.COBEM2023.COB2023-0865
Abstract
Aeroelasticity is the branch which comprises studies involving interactions between structural and aerodynamic forces, mainly focusing on aerial vehicles. The fluid-structure interactions (FSI) solution can be achieved by coupling the CFD and the Finite Element Method (FEM) for structural analysis. The present work comprises aeroelastic simulations considering a two dimensional airfoil NACA 0012 with two degrees of freedom. Different subsonic flow conditions are considered to investigate the airfoil with pitch and plunge motions, and to map the airfoil until achieving the unstable motion. The structural mesh is developed by using the Finite Element Method through the software Nastran. The solution uses the open-source software SU2 supported by the SU2 Foundation. Different aspects involving the obtained dynamics are investigated, including the stagnation point over time, the lift force and the aerodynamic pitch moment. The magnitude of the lift force is obtained by considering the mean pressure between two adjacent grid points and the distance between them, the direction of the lift force vector is obtained considering the decomposition of the force normal to the airfoil surface in the vertical direction. The pressure and velocity fields are also investigated. The results demonstrate that the airfoil is stable until Mach 0.52, and that the used procedure is efficient to provide the solution of this type of FSI problem.
Keywords
CFD, fluid-structure interaction (FSI), Aeroelasticity, SU2
