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Scaling of Adverse-Pressure-Gradient Turbulent Boundary Layers in Near-Equilibrium Conditions

  • Ricardo VinuesaEmail author
  • Alexandra Bobke
  • Ramis Örlü
  • Philipp Schlatter
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 196)

Abstract

Well-resolved large-eddy simulations are used to study adverse-pressure-gradient (APG) turbulent boundary layers (TBLs) under near-equilibrium conditions. In particular, we focus on two near-equilibrium cases where the power-law freestream velocity distribution is adjusted in order to produce long regions with a constant value of the Clauser pressure-gradient parameter \(\beta \). In the first case we obtain an APG TBL with a constant value of \(\beta \simeq 1\) over 37 average boundary-layer thicknesses, and in the second one a constant value of \(\beta \simeq 2\) for around 28 average boundary-layer thicknesses. The scaling law suggested by Kitsios et al. (Int J Heat Fluid Flow 61:117–128, 2016, [10]), proposing the edge velocity and the displacement thickness as scaling parameters, was tested on the two constant-pressure-gradient parameter cases. The mean velocity and Reynolds-stress profiles were found to be dependent on the downstream development, a conclusion in agreement with classical theory.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Ricardo Vinuesa
    • 1
    • 2
    Email author
  • Alexandra Bobke
    • 1
    • 2
  • Ramis Örlü
    • 1
  • Philipp Schlatter
    • 1
    • 2
  1. 1.Linné FLOW Centre, KTH MechanicsStockholmSweden
  2. 2.Swedish e-Science Research Centre (SeRC)StockholmSweden

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