A stable and high-order accurate discontinuous Galerkin based splitting method for the incompressible Navier-Stokes equations
In this paper we consider discontinuous Galerkin (DG) methods for the incompressible Navier-Stokes equations in the framework of projection methods. In particular we employ symmetric interior penalty DG methods within the second-order rotational incremental pressure correction scheme. The major focu...
Gespeichert in:
| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2018
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| In: |
Journal of computational physics
Year: 2017, Jahrgang: 356, Pages: 220-239 |
| ISSN: | 1090-2716 |
| DOI: | 10.1016/j.jcp.2017.11.035 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.jcp.2017.11.035 Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0021999117308732 
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| Verfasserangaben: | Marian Piatkowski, Steffen Müthing, Peter Bastian |
MARC
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| 245 | 1 | 2 | |a A stable and high-order accurate discontinuous Galerkin based splitting method for the incompressible Navier-Stokes equations |c Marian Piatkowski, Steffen Müthing, Peter Bastian |
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| 520 | |a In this paper we consider discontinuous Galerkin (DG) methods for the incompressible Navier-Stokes equations in the framework of projection methods. In particular we employ symmetric interior penalty DG methods within the second-order rotational incremental pressure correction scheme. The major focus of the paper is threefold: i) We propose a modified upwind scheme based on the Vijayasundaram numerical flux that has favourable properties in the context of DG. ii) We present a novel postprocessing technique in the Helmholtz projection step based on H(div) reconstruction of the pressure correction that is computed locally, is a projection in the discrete setting and ensures that the projected velocity satisfies the discrete continuity equation exactly. As a consequence it also provides local mass conservation of the projected velocity. iii) Numerical results demonstrate the properties of the scheme for different polynomial degrees applied to two-dimensional problems with known solution as well as large-scale three-dimensional problems. In particular we address second-order convergence in time of the splitting scheme as well as its long-time stability. | ||
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| 650 | 4 | |a High-order discontinuous Galerkin | |
| 650 | 4 | |a Incompressibility | |
| 650 | 4 | |a Navier-Stokes equations | |
| 650 | 4 | |a Projection methods | |
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