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Near-wall structure in separated flows

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Part of the Notes on Numerical Fluid Mechanics (NNFM) book series (NONUFM, volume 40)

Abstract

Results obtained from flow-visualisation experiments and skin-friction measurements in the near-wall region of a separation bubble indicate the existence of large coherent structures. The observed patterns can be divided into large low-velocity “pockets” and smaller high-velocity streaks. The existence of these structures can be explained partly by high-velocity material from the free shear layer penetrating to the wall from above. Both the form and the frequency of occurence of these structures differ considerably from those observed in turbulent boundary layers.

Keywords

Wall Shear Stress Skin Friction Turbulent Boundary Layer Light Sheet Separation Bubble 
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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Copyright information

© Springer Fachmedien Wiesbaden 1993

Authors and Affiliations

  1. 1.Hermann-Föttinger-Institut für Thermo- und FluiddynamikTechnische Universität BerlinBerlin 12Germany

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