Wall-modeling in large eddy simulation: Length scales, grid resolution, and accuracy

Soshi Kawai; Johan Larsson

doi:10.1063/1.3678331

Wall-modeling in large eddy simulation: Length scales, grid resolution, and accuracy

Soshi Kawai, Johan Larsson

Research output: Contribution to journal › Article › peer-review

336 Citations (Scopus)

Abstract

This paper addresses one of the most persistent errors in wall-modeled large eddy simulation: the inevitable presence of numerical and subgrid modeling errors in the first few grid points off the wall, which leads to the so-called "log-layer mismatch" with its associated 10-15% error in the predicted skin friction. By considering the behavior of turbulence length scales near a wall, the source of these errors is analyzed, and a method that allows for the log-layer mismatch to be removed, thereby yielding accurately predicted skin friction, is proposed.

Original language	English
Article number	015105
Journal	Physics of Fluids
Volume	24
Issue number	1
DOIs	https://doi.org/10.1063/1.3678331
Publication status	Published - 2012 Jan 5
Externally published	Yes

ASJC Scopus subject areas

Computational Mechanics
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1063/1.3678331

Cite this

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abstract = "This paper addresses one of the most persistent errors in wall-modeled large eddy simulation: the inevitable presence of numerical and subgrid modeling errors in the first few grid points off the wall, which leads to the so-called {"}log-layer mismatch{"} with its associated 10-15% error in the predicted skin friction. By considering the behavior of turbulence length scales near a wall, the source of these errors is analyzed, and a method that allows for the log-layer mismatch to be removed, thereby yielding accurately predicted skin friction, is proposed.",

author = "Soshi Kawai and Johan Larsson",

note = "Funding Information: The authors gratefully acknowledge Dr. Louis J. Souverein for providing extensive experimental data for validation. The code used in this study is based on an extension to the code FDL3DI provided by Dr. Miguel R. Visbal at the Air Force Research Laboratory. This work was supported in part by the NASA Hypersonics program (Grant NNX08AB30A), the NASA Subsonic Fixed-Wing program (Grant NNX11AI60A), the Air Force turbulence program (Grant FA9550-11-1-0111), and the JAXA International Top Young Fellowship Program. Computer time was provided by the High Performance Computing Center at Stanford University, which is partially funded under the American Recovery and Reinvestment Act of 2009, and by NERSC through successive ERCAP awards. ",

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Wall-modeling in large eddy simulation: Length scales, grid resolution, and accuracy

Abstract

ASJC Scopus subject areas

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