Intense Viscous Dissipation Events and the Vorticity Field in Near-Wall Turbulence

  • S. Gavrilakis
  • M. O. Deville
Conference paper
Part of the ERCOFTAC Series book series (ERCO, volume 5)


In high Reynolds number turbulent flows there exists a close statistical relationship between the mean viscous dissipation rate e and the mean enstrophy field (Tennekes & Lumley, 1972). For near-wall shear-driven turbulent flows the intensities of the turbulent velocity and vorticity fields attain their maxima close to the boundary in an area of high viscous dissipation. This suggests that the processes underlying turbulent energy, enstrophy and dissipation generation may be (and are) related, but the constraints imposed by the wall leads to the expectation that the same flow structures may be involved in all three processes. Conditional sampling of the turbulent flow field around ejection and sweep events shows that most of the dissipation and enstrophy generation occurs near the energy producing events — with some of these events involving greater dissipation than production of turbulent energy (Gavrilakis, 1996). The present report looks at the relation between the generation of the turbulent energy dissipation and enstrophy fields in the vicinity of a smooth wall.


Direct Numerical Simulation Viscous Sublayer Spectral Element Method Rectangular Duct Streamwise Vorticity 
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Copyright information

© Springer Science+Business Media Dordrecht 1997

Authors and Affiliations

  • S. Gavrilakis
    • 1
  • M. O. Deville
    • 1
  1. 1.LMF-DGMSwiss Federal Institute of TechnologyLausanneSwitzerland

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