A high-order Discontinuous Galerkin solver for 3D aerodynamic turbulent flows

This paper deals with the evaluation and validation of a recently developed parallel discontinuous Galerkin code for the numerical solution of the RANS and k-omega; turbulence model equations. The main features of the code can be summarized as follows: a) high-order spatial accuracy on hybrid grids, b) fully coupled, implicit time discretization, c) non-standard, realizable k-omega; model implementation, d) efficient parallel execution using METIS package for grid partitioning and PETSc library for the linear algebra. The paper reports the numerical results of second- and third-order accurate computations of the subsonic turbulent flow in the Stanitz elbow and of the transonic turbulent flow around the ONERA M6 wing.