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- W2059953548 abstract "We are concerned with the numerical solution of the Navier-Stokes and Reynoldsaveraged Navier-Stokes equations using the Hybridizable Discontinuous Galerkin (HDG) methods recently introduced in Ref. [34]. These methods are computationally more ecient and accurate than other discontinuous Galerkin methods and hence, well suited to be applied to CFD problems. However, in order for them to be able to deal with the range of problems of relevance to Aeronautics, both turbulence and shocks have to be properly addressed. First, we will present a modication of the Spalart-Allmaras (SA) turbulence model that improves the convergence properties of the method by means of a regularization of the working variable; this modication is eective only in regions where the eddy viscosity is smaller than the molecular viscosity, therefore, it does not aect the numerical prediction of ow quantities as compared to the original SA model. Then, an articial viscosity coecient driven by the divergence of the velocity will be implemented in order to deal with shock waves. Numerical results are presented to demonstrate the proposed approach in several instances, from laminar separated ows to turbulent compressible ows." @default.
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- W2059953548 date "2011-06-14" @default.
- W2059953548 modified "2023-09-30" @default.
- W2059953548 title "Navier-Stokes Solution Using Hybridizable Discontinuous Galerkin methods" @default.
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- W2059953548 doi "https://doi.org/10.2514/6.2011-3407" @default.
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