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

Philip L. Lederer, Xaver Mooslechner*, Joachim Schöberl

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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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.

Original languageEnglish
Article number112492
Number of pages19
JournalJournal of computational physics
Volume493
Early online date12 Sept 2023
DOIs
Publication statusPublished - 15 Nov 2023

Keywords

  • UT-Hybrid-D
  • High-order finite elements
  • Implicit large eddy simulation
  • Turbulent channel and periodic hill flow
  • Under-resolved turbulence simulations
  • Variational multiscale
  • Discontinuous Galerkin

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