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Journal Articles Physics of Fluids Year : 2008

Reduced-order modeling for unsteady transonic flows around an airfoil

Abstract

High-transonic unsteady flows around an airfoil at zero angle of incidence and moderate Reynolds numbers are characterized by an unsteadiness induced by the von Kármán instability and buffet phenomenon interaction. These flows are investigated by means of low-dimensional modeling approaches. Reduced-order dynamical systems based on proper orthogonal decomposition are derived from a Galerkin projection of two-dimensional compressible Navier-Stokes equations. A specific formulation concerning density and pressure is considered. Reduced-order modeling accurately predicts unsteady transonic phenomena.
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Dates and versions

hal-03574296 , version 1 (15-02-2022)

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Rémi Bourguet, Marianna Braza, Alain Dervieux. Reduced-order modeling for unsteady transonic flows around an airfoil. Physics of Fluids, 2008, 19 (11), pp.111701-111701. ⟨10.1063/1.2800042⟩. ⟨hal-03574296⟩
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