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High-Order Flux Reconstruction Schemes for LES on Tetrahedral Meshes

  • Jonathan R. BullEmail author
  • Antony Jameson
Conference paper
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 130)

Abstract

The use of the high-order Flux Reconstruction (FR) spatial discretization scheme for LES on unstructured meshes is investigated. Simulations of the compressible Taylor-Green vortex at \(Re=1{,}600\) demonstrate that the FR scheme has low numerical dissipation and accurately reproduces the turbulent energy cascade at low resolution, making it ideal for high-order LES. To permit the use of subgrid-scale models incorporating explicit filtering on tetrahedral meshes, a high-order filter acting on the modal form of the solution (i.e. the Dubiner basis functions) is developed. The WALE-Similarity mixed (WSM) model using this filter is employed for LES of the flow over a square cylinder at \(Re=21{,}400\), obtaining reasonable agreement with experiments. Future research will be directed at improved SGS models and filters and at developing high-order hybrid RANS/LES methods.

Keywords

Large Eddy Simulation Discontinuous Galerkin Tetrahedral Mesh Numerical Dissipation Flux Reconstruction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This research was made possible by the support of the NSF under grant number 1114816, monitored by Dr. Leland Jameson, and the Air Force Office of Scientific Research under grant number FA9550-10-1-0418, monitored by Dr. Fariba Fahroo.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Department of Aeronautics and AstronauticsStanford UniversityStanfordUSA

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