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UNSTEADY REYNOLDS-AVERAGED NAVIER-STOKES COMPUTATIONS OF SHOCK INDUCED OSCILLATIONS OVER TWO-DIMENSIONAL RIGID AIRFOILS

Eric Coustols
Turbulence Modelling and Prediction Unit, Aerodynamics and Energetic Modelling Department, ONERA Toulouse, 2 avenue Edouard Belin, 31055 TOULOUSE Cedex 4, France

Nicolas Schaeffer
Aerodynamics and Energetics Modeling Department Turbulence Modeling and Prediction Unit, ONERA Toulouse, 2 avenue Edouard Belin - 31055 Toulouse CEDEX 4, France

Mylene Thiery
Aerodynamics and Energetics Modeling Department Turbulence Modeling and Prediction Unit, ONERA Toulouse, 2 avenue Edouard Belin - 31055 Toulouse CEDEX 4, France

Pedro Cordeiro Fernandes
present address: Institut de Mecanique des Fluides de Toulouse, UMR CNRS/INPT N 5502, avenue du Professeur Camille Soula, 31400 Toulouse, France

Abstract

This paper deals with results from on-going research conducted at ONERA, regarding validation of turbulence models for unsteady transonic flows, for which shock wave/boundary layer interaction develops. The goal is to predict Shock Induced Oscillations that appear over airfoils. Two-dimensional unsteady Navier-Stokes computations have been applied to two test cases, using two complementary strategies: the "wall layer" one involving a coarse grid and a more" classic" one applied to a refined grid. Turbulence closure has been achieved using transport equation models.