publication . Doctoral thesis . 2009

Unsteady aerodynamic coefficients obtained by a compressible vortex lattice method.

Fabiano Hernandes;
Open Access English
  • Published: 27 Nov 2009
  • Publisher: Instituto Tecnológico de Aeronáutica
Abstract
Unsteady solutions for the aerodynamic coefficients of a thin airfoil in compressible subsonic or supersonic flows are studied. The lift, the pitch moment, and pressure coefficients are obtained numerically for the following motions: the indicial response (unit step function) of the airfoil, i.e., a sudden change in the angle of attack; a thin airfoil penetrating into a sharp edge gust (for several gust speed ratios); a thin airfoil penetrating into a one-minus-cosine gust and sinusoidal gust (a typical gust used in commercial aircraft design); oscillating airfoil; and also the interaction of the airfoil with a shed (from convection phenomenon) vortex passing un...
Subjects
arXiv: Physics::Fluid DynamicsPhysics::Atmospheric and Oceanic Physics
free text keywords: Coeficientes aerodinâmicos, Escoamento compressível, Método de malha turbilhonar, Aerodinâmica não-estacionária, Dinâmica dos fluidos computacional, Física
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