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High-order projection-based upwind method for implicit large eddy simulation
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DOI：10.1016/j.jcp.2023.112492.png)
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Abstract
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We assess the ability of three different approaches based on high-order discontinuous Galerkin methods to simulate under-resolved turbulent flows. The capabilities of the mass conserving mixed stress method as structure resolving large eddy simulation solver are examined. A comparison of a variational multiscale model to no-model or an implicit model approach is presented via numerical results. In addition, we present a novel approach for turbulent modeling in wall-bounded flows. This new technique provides a more accurate representation of the actual subgrid scales in the near wall region and gives promising results for highly under-resolved flow problems. In this paper, the turbulent channel flow and periodic hill flow problem are considered as benchmarks for our simulations. (c) 2023 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/).
Keywords:
Under-resolved turbulence simulations
High -order finite elements
Discontinuous Galerkin
Implicit large eddy simulation
Turbulent channel and periodic hill flow
Variational multiscale
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