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Viscous Drag Reduction with Surface-Embedded Grooves

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Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM,volume 110)

Abstract

Turbulent drag reduction in wall-bounded flows is investigated experimentally by considering the dynamic effects provoked by large variation of anisotropy in the velocity fluctuations. Deductions based on the analysis of near-wall turbulence lead to the design of the grooved surface topology, for which it is demonstrated experimentally that it can produce a maximum drag reduction of DR ≃ 25%. The drag reduction effect persisted in a narrow range of flow velocities and for the reported experimental conditions corresponds to groove dimensions of about 0.8 viscous length-scale.

Keywords

  • Wall Shear Stress
  • Drag Reduction
  • Turbulent Dissipation Rate
  • Turbulence Anisotropy
  • Maximum Drag Reduction

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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References

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Jovanović, J., Frohnapfel, B., Delgado, A. (2010). Viscous Drag Reduction with Surface-Embedded Grooves. In: Deville, M., Lê, TH., Sagaut, P. (eds) Turbulence and Interactions. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 110. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-14139-3_23

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  • DOI: https://doi.org/10.1007/978-3-642-14139-3_23

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-14138-6

  • Online ISBN: 978-3-642-14139-3

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