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VGU RESEARCH REPOSITORY


Please use this identifier to cite or link to this item: https://epub.vgu.edu.vn/handle/dlibvgu/236
Title: Discontinuous galerkin for advection with interface-centered reconstruction
Authors: Khieu Huu Loc 
Krzysztof Fidkowski 
Eric Johnsen 
Keywords: Discontinuous galerkin;Advection;Interface-centered reconstruction
Issue Date: 2016
Conference name: SCITECH 2016 
Abstract: 
The Recovery-based Discontinuous Galerkin (RDG) discretization has been shown to be the most accurate among contemporary DG schemes for diffusion on a Cartesian grid. It achieves the order of accuracy 3p + 2 for even p and 3p + 1 for odd p, where p is the order of the polynomial basis. However, the overall performance of a Navier{Stokes simulation,using RDG for viscous terms, is limited to 2p+1 due to the DG discretization for advection. We describe two different approaches to improve the accuracy of the DG discretization for advection. The rst option is able to reach a maximal order of 4p + 3, albeit utilizing an enlarged computational stencil. The second one attains 3p+1 without enlarging the stencil. It is also computationally cheaper owing to the lower-order reconstruction.
Duration: 16-03-2016
Conference venue: San Diego, USA
URI(1): http://epub.vgu.edu.vn/handle/dlibvgu/236
Appears in Collections:Conference papers

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