Reduced-order modeling for unsteady transonic flows around an airfoil | Zendy

Rémi Bourguet | Zendy; Marianna Braza | Zendy; Alain Dervieux | Zendy

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Reduced-order modeling for unsteady transonic flows around an airfoil

Author(s) -

Rémi Bourguet,

Marianna Braza,

Alain Dervieux

Publication year - 2007

Publication title -

physics of fluids

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.188

H-Index - 180

eISSN - 1089-7666

pISSN - 1070-6631

DOI - 10.1063/1.2800042

Subject(s) - transonic , airfoil , reynolds number , mach number , mathematics , mechanics , physics , compressible flow , compressibility , aerodynamics , turbulence

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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