Nektar++ on Copper (Cray XE6)

Nektar++ on Copper (Cray XE6)

Copper is a Cray XE6 system and supports research programs of the United the States Department of Defense (DoD). The system is provided for computationally based science and engineering and is intended for high performance computing, large-scale storage, and utility computing.

On the Connections Between Discontinuous Galerkin and Flux Reconstruction Schemes: Extension to Curvilinear Meshes

On the Connections Between Discontinuous Galerkin and Flux Reconstruction Schemes: Extension to Curvilinear Meshes
DOI: 10.1007/s10915-015-0119-z/fulltext.html
Abstract: This paper investigates the connections between many popular variants of the well-established discontinuous Galerkin method and the recently developed high-order flux reconstruction approach on irregular tensor-product grids.

Dealiasing techniques for high-order spectral element methods on regular and irregular grids

Dealiasing techniques for high-order spectral element methods on regular and irregular grids
DOI: 10.1016/j.jcp.2015.06.032
Abstract: High-order methods are becoming increasingly attractive in both academia and industry, especially in the context of computational fluid dynamics. However, before they can be more widely adopted, issues such as lack of robustness in terms of numerical stability need to be addressed, particularly when treating industrial-type problems where challenging geometries and a wide range of physical scales, typically due to high Reynolds numbers, need to be taken into account.

Triple-deck and direct numerical simulation analyses of high-speed subsonic flows past a roughness element

Triple-deck and direct numerical simulation analyses of high-speed subsonic flows past a roughness element
DOI: 10.1017/jfm.2015.281
Abstract: This paper is concerned with the boundary-layer separation in subsonic and transonic flows caused by a two-dimensional isolated wall roughness. The process of the separation is analysed by means of two approaches: the direct numerical simulation (DNS) of the flow using the Navier–Stokes equations, and the numerical solution of the triple-deck equations.

A Guide to the Implementation of Boundary Conditions in Compact High-Order Methods for Compressible Aerodynamics

A Guide to the Implementation of Boundary Conditions in Compact High-Order Methods for Compressible Aerodynamics
DOI: 10.2514/6.2014-2923
Abstract: The nature of boundary conditions, and how they are implemented, can have a significant impact on the stability and accuracy of a Computational Fluid Dynamics (CFD) solver. The objective of this paper is to assess how different boundary conditions impact the performance of compact discontinuous high-order spectral element methods (such as the discontinuous Galerkin method and the Flux Reconstruction approach), when these schemes are used to solve the Euler and compressible Navier-Stokes equations on unstructured grids.