A Note on Spatial Zero Crossings of Fluctuating Velocity Field in Wall Bounded Turbulent Flows

  • Tardu SedatEmail author
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 141)


Spatial zero-crossings of fluctuating velocity and shear stress fields are investigated in a turbulent channel flow, through direct numerical simulations. It is confirmed that the Liepmann and Taylor scales resulting from spatial zero crossings coincide more or less as in experimental time-series. A simple relationship is provided for the zero-crossing frequency of shear stress signals. It is further shown that the spanwise zero-crossings of the local wall normal velocity contributes up to 80% to the dissipation near the wall.


Direct Numerical Simulation Spanwise Direction Streamwise Vortex Turbulent Channel Flow Direct Numerical Simulation Data 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.LEGIGrenoble, Cedex 9France

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