A New Class of High-Order Energy Stable Flux Reconstruction Schemes
- 1.1k Downloads
The flux reconstruction approach to high-order methods is robust, efficient, simple to implement, and allows various high-order schemes, such as the nodal discontinuous Galerkin method and the spectral difference method, to be cast within a single unifying framework. Utilizing a flux reconstruction formulation, it has been proved (for one-dimensional linear advection) that the spectral difference method is stable for all orders of accuracy in a norm of Sobolev type, provided that the interior flux collocation points are located at zeros of the corresponding Legendre polynomials. In this article the aforementioned result is extended in order to develop a new class of one-dimensional energy stable flux reconstruction schemes. The energy stable schemes are parameterized by a single scalar quantity, which if chosen judiciously leads to the recovery of various well known high-order methods (including a particular nodal discontinuous Galerkin method and a particular spectral difference method). The analysis offers significant insight into why certain flux reconstruction schemes are stable, whereas others are not. Also, from a practical standpoint, the analysis provides a simple prescription for implementing an infinite range of energy stable high-order methods via the intuitive flux reconstruction approach.
KeywordsHigh-order methods Flux reconstruction Nodal discontinuous Galerkin method Spectral difference method Stability
Unable to display preview. Download preview PDF.
- 1.Reed, W.H., Hill, T.R.: Triangular mesh methods for the neutron transport equation. Technical Report LA-UR-73-479, Los Alamos National Laboratory, Los Alamos, New Mexico, USA (1973) Google Scholar
- 12.Huynh, H.T.: A flux reconstruction approach to high-order schemes including discontinuous Galerkin methods. In: AIAA Computational Fluid Dynamics Meeting (2007) Google Scholar
- 15.Carpenter, M.H., Kennedy, C.: Fourth-order 2N-storage Runge-Kutta schemes. Technical Report TM 109112, NASA, NASA Langley Research Center (1994) Google Scholar