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Anisotropic dynamics in filtered wall-turbulent flows

  • A. Cimarelli
  • E. De Angelis
Conference paper
Part of the ERCOFTAC Series book series (ERCO, volume 15)

Abstract

The most important contribution to the description of the energy transfer mechanism in the space of scales of turbulent flows is Kolmogorov theory. Under the assumption of isotropy, this theory asserts that the energy cascade in the inertial range is from large to small scales and proportional to the rate of energy dissipation. This picture is claimed to be universal since it is commonly assumed that isotropy recovery takes place at small scales of any flow for sufficiently high Reynolds number. This assumption fails to hold in wall-turbulence, where the interaction between anisotropic production and inhomogeneous spatial fluxes strongly modifies the classical energy cascade up to a reverse cascade (Marati et al., 2004).

Keywords

Buffer Layer Inertial Range Subgrid Scale Energy Cascade Energy Transfer Mechanism 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    Marati, N., Casciola, C.M., Piva, R.: Energy cascade and spatial fluxes in wall turbulence. J. Fluid Mech. 521, (2004). Google Scholar
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    Casciola, C.M., Gualtieri, P., Jacob, B., Piva, R.: Scaling properties in the production range of shear dominated flows. Phys. Rev. Lett. 95, 2 (2005). CrossRefGoogle Scholar
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    Cimarelli, A., De Angelis, E.: Analysis of the Kolmogorov equation for filtered wall-turbulent flows. Submitted to J. Fluid Mech. (2010) Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.DIEM, II Facoltà di IngegneriaUniversità di BolognaBolognaItaly

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