congresos y reuniones científicas
COMPARACIÓN DE MODELOS AERODINÁMICOS PARA LA ESTIMACIÓN DE FUERZAS EN ALAS BATIENTES
MARCELO F. VALDEZ; BALAKUMAR BALACHANDRAN; SERGIO PREIDIKMAN
Congreso; MECOM 2021 - XXXVII Congreso Argentino de Mecánica Computacional; 2021
Facultad de Ingeniería UNNE
In this effort, different aerodynamic models derived from the Unsteady Vortex Lattice Method (UVLM) are compared in terms of the estimated aerodynamic loads produced by a flapping wing section. The UVLM can describe the evolution of the vortical wakes left behind by immersed bodies; therefore, it allows to determine their influence on the aerodynamic loads. To account for the influence of the experimentally observed leading edge vortex (delayed stall mechanism), an ad hoc modification of the aerodynamic force is introduced. This modification is a generalization of the leading-edge suction analogy, which avoids the need to explicitly model the flow separation from the leading edge. The predictions of the models are compared with experimental data and with CFD simulation results available in the literature. It is observed that, in general, the modification of the aerodynamic load improves the correlation between the predictions of the models and the experimental results.