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arXiv · 2301.01678

High-order projection-based upwind method for implicit large eddy simulation

Philip L. Lederer·Xaver Mooslechner·Joachim Schöberl
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Abstract

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.

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Philip L. Lederer, Xaver Mooslechner, Joachim Schöberl. 2023-01-04. High-order projection-based upwind method for implicit large eddy simulation. https://arxiv.org/abs/2301.01678

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