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- W2524630014 abstract "A Discontinuous Galerkin Method is applied to unstructured grids to simulate aeroacoustic propagation, modelled by the Linearized Euler Equations. The quadrature-free form of the Discontinuous Galerkin Method is used on triangular elements with straight edges. Computations of a freely propagating pressure pulse demonstrate that the implementation achieves the theoretical order of accuracy. With increasing order, the method becomes more efficient. However, simulation of acoustic scattering by a cylinder shows that the linear treatment of the geometry can limit the accuracy at high order. Two higher-order treatments of curved boundaries are presented to overcome this restriction. It is found that only the use of curved elements, on which the quadrature-free technique cannot be applied, provides satisfying accuracy; further implications on stability and computational cost are discussed." @default.
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- W2524630014 date "2008-09-01" @default.
- W2524630014 modified "2023-09-26" @default.
- W2524630014 title "A 2D Discontinuous Galerkin method for aeroacoustics with curved boundary treatment" @default.
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