30th Congress of the International Council of the Aeronautical Sciences

02.1 - Aerodynamics - CFD Methods and Validation

COMPUTATIONAL EFFICIENCY AND QUALITY OF DIFFERENT VERSIONS OF DISCONTINUOUS GALERKIN METHOD FOR LES/DES APPLICATIONS

I. Bosnyakovš, A.I. Troshinš, V.V. Vlasenkoš, A.V. Wolkovš; šTsAGI, Russia

Implicit dual-time stepping high-order Discontinuous Galerkin (DG) method for LES/DES applications is considered. Four different approximations of time derivative are compared. 4th order calculations on the basis of Smagorinsky model are compared with 2nd order Integrated LES calculations. Steady and unsteady wall functions for LES are proposed. Computational efficiency and physical quality of results are compared.rn


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