Advertisement

Compressibility Effects on Turbulent Separated Flow in a Streamwise-Periodic Hill Channel -— Part 2

  • J. Ziefle
  • L. Kleiser
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 97)

Abstract

We present large-eddy simulation (LES) results of the streamwise-periodic hill channel configuration, which is a standard test case for massively separated flows. The Reynolds number (computed with the hill height, the bulk mass flux through the cross-section above the hill crest and the dynamic viscosity at the wall) is chosen as 2800, in accordance with recent DNS data from Peller & Manhart (2004) for incompressible flow. The Mach number (computed with the volumetric bulk velocity and the wall temperature) was varied between 0.2 and 2.5. The numerical simulation code NSMB discretises the compressible Navier-Stokes equations with the finite-volume method on a deliberately-chosen coarse structured mesh. The subgrid-scales are accounted for by the well-proven approximate-deconvolution model (ADM).

Keywords

Mach Number Streamwise Velocity Separation Bubble Lower Mach Number Compressibility Effect 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Almeida, G.P., Durão, D.F.G., Heitor, M.V.: Wake flows behind two-dimensional model hills. Experim. Therm. Fluid Sci. 7, 87–101 (1993)CrossRefGoogle Scholar
  2. Fröhlich, J., et al.: Highly resolved large-eddy simulation of separated flow in a channel with streamwise periodic constrictions. J. Fluid Mech. 526, 19–66 (2005)zbMATHCrossRefMathSciNetGoogle Scholar
  3. Peller, N., Manhart, M.: DNS einer Kanalströmung mit periodisch angeordneten Hügeln. In: STAB Jahresbericht 2004 DGLR/STAB Fachsymposium, Bremen, Germany, November 16–18, 2004, vol. 14, p. 178 (2004)Google Scholar
  4. Temmerman, L., Leschziner, M.A.: Large eddy simulation of separated flow in a streamwise periodic channel constriction. Turbulence and Shear Flow Phenomena 2 3, 399–404 (2001)Google Scholar
  5. Temmerman, L., et al.: Investigation of wall-function approximations and subgrid-scale models in large eddy simulation of separated flow in a channel with streamwise periodic constrictions. Int. J. Heat Fluid Flow 24(2), 157–180 (2003)CrossRefGoogle Scholar
  6. Ziefle, J., Kleiser, L.: Large-eddy simulation of a round jet in crossflow. In: 36th AIAA Fluid Dynamics Conference, AIAA Paper 2006-3370, San Francisco, USA, June 5–8, 2006 (2006)Google Scholar
  7. Ziefle, J., Kleiser, L.: Compressibility effects on turbulent separated flow in a streamwise-periodic hill channel — Part 1. In: Proceedings of the IUTAM Symposium, Unsteady Separated Flows and their Control, Corfu, Greece, June 18–22, 2007, Springer, Heidelberg (2007)Google Scholar
  8. Ziefle, J., Stolz, S., Kleiser, L.: Large-eddy simulation of separated flow in a channel with streamwise-periodic constrictions. In: 17th AIAA Computational Fluid Dynamics Conference, AIAA Paper 2005-5353, Toronto, Canada, June 6–9, 2005 (2005)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • J. Ziefle
    • 1
  • L. Kleiser
    • 1
  1. 1.Institute of Fluid DynamicsETH ZurichSwitzerland

Personalised recommendations