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New Multiple-scale Approach for the Numerical Simulation of Non-equilibrium Boundary Layer Flows

DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf.690
pages 357-360

E. Masson
ONERA, Dpt of Computational Fluid Dynamics and Aeroacoustics, 29 avenue de la Division Leclerc - B.P. 72 - 92 322 Chatillon Cedex, France

V. Gleize
ONERA, Dpt of Computational Fluid Dynamics and Aeroacoustics, 29 avenue de la Division Leclerc - B.P. 72 - 92 322 Chatillon Cedex, France

Roland Schiestel
IRPHE, UMR 6594 CNRS, 49 rue Frédéric Joliot-Curie - B.P. 146 -13 384 Marseille Cedex 13, France

Аннотация

Despite the degree of complexity and the improvements of the two-equation eddy-viscosity models, the study of adverse pressure gradient flows is still problematic due to the existence of non-linear phenomena. Among the list of critical flows, the non-equilibrium boundary layers flows hold especially the attention. A good approach of the turbulence is necessary to improve the prediction of these kind of flows. But the classical one-point closures used for the numerical simulations lead to several modelling problems which have various origins. These problems include highly anisotropic turbulence, influence of density variations, compressibility and effects of strong deviations from equilibrium.

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