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Statistically invariant eddy viscosity models

delete2022-05-13
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OA
AI
D
Dario Klingenberg
M
Martin Oberlack *
DOI:10.1063/5.0090988delete
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摘要

摘要

En 中文
We presently generalize existing two-equation Reynolds-averaged Navier-Stokes models by using recent advances in our understanding of the Lie symmetries of governing turbulence. The motivation for this and the necessary steps are laid out using the conventional terminology of turbulence modeling, without requiring deep knowledge about the mathematical concept of symmetries. For illustration purposes, these steps are applied to the standard k-epsilon model and the k-omega model. The so-modified k-epsilon model is applied to a wide range of canonical flows. For all of them, it is shown to match or even improve the performance of its classical counterpart and is, thus, shown to be more general than the original k-epsilon model. (C) 2022 Author(s).
Keyword:
AXIALLY ROTATING PIPE
MULTIPOINT EQUATIONS
TURBULENCE
SYMMETRIES
LAMINARIZATION
PREDICTION

期刊

Physics of Fluids 封面图
Physics of Fluids
IF:
4.3
论文数:
2.9W
被引数:
8.0W

机构

T
Technical University of Darmstadt
学者数:
1.3W
论文数: 10.0K
被引数: 1.2W
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