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Erschienen in:
2011 | OriginalPaper | Buchkapitel
Shearless turbulence - wall interaction: a DNS database for second-order closure modeling
verfasst von : J. Bodart, L. Joly, J.-B. Cazalbou
Erschienen in: Direct and Large-Eddy Simulation VIII
Verlag: Springer Netherlands
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With the aim to get a better insight of wall-turbulence interaction, we designed an original configuration where a random forcing replace usual shear-related mechanisms of turbulence production. The synthesized turbulence diffuses by itself from a central plane layer, and continuously feeds on both sides a
solid
-wall or
free-slip
-surface with a shearless agitation. This specific situation allows to understand the blocking effect induced by the normal velocity cancelation at the surface, and is particularly relevant to quantify the intercomponent energy transfer occurring in this region. The configuration, extensively described in (Bodart et al.,
2010
), can be seen as the numerical counterpart of the oscillating grid experiment (see
e.g.
(De Silva and Fernando,
1994
)).