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A New High-Order Method for the Accurate Simulation of Incompressible Wall-Bounded Flows

  • Peter LenaersEmail author
  • Phillip Schlatter
  • Geert Brethouwer
  • Arne V. Johansson
Conference paper
Part of the ERCOFTAC Series book series (ERCO, volume 20)

Abstract

A new high-order method for the accurate simulation of incompressible wall-bounded flows is presented. In stream- and spanwise direction the discretisation is performed by standard Fourier series, while in wall-normal direction the method combines high-order collocated compact finite differences with the influence matrix method to calculate the pressure boundary conditions that render the velocity field divergence-free. The main advantage over Chebyshev collocation is that in wall-normal direction, the grid can be chosen freely and thus excessive clustering near the wall is avoided. Both explicit and implicit discretisations of the viscous terms are described, with the implicit method being more complex, but also having a wider range of applications. The method is validated by simulating fully turbulent channel flow at friction Reynolds number \(Re_\tau = 395\), and comparing our data with existing numerical results. The results show excellent agreement proving that the method simulates all physical processes correctly.

Keywords

Direct Numerical Simulation Spanwise Direction Turbulent Channel Flow Pressure Boundary Condition Compact Finite Difference Scheme 
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.

Notes

Acknowledgments

Financial support from the Swedish Research Council and computer time provided by SNIC (Swedish National Infrastructure for Computing) is gratefully acknowledged.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Peter Lenaers
    • 1
    Email author
  • Phillip Schlatter
    • 1
  • Geert Brethouwer
    • 1
  • Arne V. Johansson
    • 1
  1. 1.Linné FLOW Centre, KTH MechanicsStockholmSweden

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