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Fifth International Symposium on Turbulence and Shear Flow Phenomena
August, 27-29, 2007, Technische Universität München, Munich, Germany

DOI: 10.1615/TSFP5

SUBGRID-SCALE ENSTROPHY TRANSFER IN TURBULENT WALL BOUNDED FLOWS

pages 291-294
DOI: 10.1615/TSFP5.440
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要約

A-priori tests are carried out to analyse the SGS enstrophy transfer in turbulent channel ow. The SGS enstrophy transfer is negative (SGS enstrophy backscatter) in the viscous sublayer until y+~6, where it becomes positive (SGS enstrophy forward scatter). The maximum enstrophy dissipation is found to be located at about 8 wall units, where a strong correlation is detected between the highspeed streaks and the SGS enstrophy dissipation.

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