Abstract
The statistical relationship between vortex tubes and vortex sheets in turbulent wall-bounded flow is analyzed by means of conditional averaging of DNS fields. The results support strong association between the two types of coherent structures, and indicate that vortex tubes are produced upon roll-up of vortex sheets (as in the hairpin vortex paradigm), or interact causing the ejection of near-wall vorticity, or generate sheets of streamwise vorticity through a rubbing effect caused by the no-slip condition.
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The support of the CASPUR computing consortium through a 2009 Standard HPC Grant is gratefully acknowledged.
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Pirozzoli, S. (2011). On the Relationship Between Vortex Tubes and Sheets in Wall-Bounded Flows. In: Stanislas, M., Jimenez, J., Marusic, I. (eds) Progress in Wall Turbulence: Understanding and Modeling. ERCOFTAC Series, vol 14. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-9603-6_17
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DOI: https://doi.org/10.1007/978-90-481-9603-6_17
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