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Title of Journal: Theor Comput Fluid Dyn

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Abbravation: Theoretical and Computational Fluid Dynamics

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Springer Berlin Heidelberg

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DOI

10.1016/j.apmr.2011.07.071

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ISSN

1432-2250

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Wallmodeled large eddy simulation of turbulent ch

Authors: Jinglei Xu Meng Li Yang Zhang Longfei Chen
Publish Date: 2016/06/24
Volume: 30, Issue: 6, Pages: 565-577
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Abstract

The von Karman length scale is able to reflect the size of the local turbulence structure However it is not suitable for the near wall region of wallbounded flows for its value is almost infinite there In the present study a simple and novel length scale combining the wall distance and the von Karman length scale is proposed by introducing a structural function The new length scale becomes the von Karman length scale once local unsteady structures are detected The proposed method is adopted in a series of turbulent channel flows at different Reynolds numbers The results show that the proposed length scale with the structural function can precisely simulate turbulence at high Reynolds numbers even with a coarse grid resolution

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