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

Authors :
Lederer, Philip L.
Mooslechner, Xaver
Schöberl, Joachim
Source :
Journal of Computational Physics. Nov2023, Vol. 493, pN.PAG-N.PAG. 1p.
Publication Year :
2023

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. • Low dissipative high-order DG-FEM solver for implicit large eddy simulation. • Novel VMS like upwind stabilization for incompressible wall-bounded turbulent flows. • Comparison and verification using different high Reynolds number test cases. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00219991
Volume :
493
Database :
Academic Search Index
Journal :
Journal of Computational Physics
Publication Type :
Academic Journal
Accession number :
172809909
Full Text :
https://doi.org/10.1016/j.jcp.2023.112492