Subgrid-scale modeling and implicit numerical dissipation in DG-based Large-Eddy Simulation
Name
Subgrid-scale modeling and implicit numerical dissipation in DG-based Large-Eddy Simulation.pdf
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5.03 MB
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Adobe PDF
Checksum (MD5)
1570b734602aa58f282efe202994b605
Author(s)
Fernandez del Campo, Pablo
Nguyen, Ngoc Cuong
Peraire, Jaime
Date Issued
June 2017
Journal
23rd AIAA Computational Fluid Dynamics Conference
Publisher
American Institute of Aeronautics and Astronautics
Citation
Fernandez, Pablo, et al. "Subgrid-Scale Modeling and Implicit Numerical Dissipation in DG-Based Large-Eddy Simulation." 23rd AIAA Computational Fluid Dynamics Conference, 5-9 June, 2017, Denver, Colorado, American Institute of Aeronautics and Astronautics, 2017.
Version
Author's final manuscript
Abstract
Over the past few years, high-order discontinuous Galerkin (DG) methods for Large-Eddy Simulation (LES) have emerged as a promising approach to solve complex turbulent flows. However, despite the significant research investment, the relation between the discretization scheme, the subgrid-scale (SGS) model and the resulting LES solver remains unclear. This paper aims to shed some light on this matter. To that end, we investigate the role of the Riemann solver, the SGS model, the time resolution, and the accuracy order in the ability to predict a variety of flow regimes, including transition to turbulence, wall-free turbulence, wall-bounded turbulence, and turbulence decay. The transitional flow over the Eppler 387 wing, the TaylorGreen
vortex problem and the turbulent channel flow are considered to this end. The focus is placed on post-processing the LES results and providing with a rationale for the performance of the various approaches.
MIT Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.2514/6.2017-3951
