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Partially-Averaged Navier-Stokes (PANS) Simulations of Lid-Driven Cavity Flow—Part II: Flow Structures

  • Pooyan Razi
  • Vishnu Venugopal
  • Shriram Jagannathan
  • Sharath GirimajiEmail author
Conference paper
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 130)

Abstract

The vortical flow structures in low and high Reynolds number lid-driven cavity flows are examined using Partially-averaged Navier-Stokes (PANS) and unsteady Reynolds-averaged Navier-Stokes (URANS) simulations. The spanwise aspect ratio (SAR) of the cavity is 3:1:1 and the Reynolds numbers based on cavity height and lid velocity are \(10^4\) and \(10^6\). It is demonstrated that, while the mean flow statistics are nearly the same for URANS and PANS, the complex vortex structures are captured much better by PANS. The difference between the URANS and PANS structures are even more distinct at higher Reynolds numbers. Furthermore, it is shown that the PANS small-scale statistics at different levels of resolution are self-similar and scale according to established turbulence theory.

Keywords

Large Eddy Simulation Direct Numerical Simulation High Reynolds Number Primary Vortex Cavity Flow 
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

The computational time for the simulations presented in this work was awarded by the Texas A&M Supercomputering Facility and the Texas Advanced Center for Computations (TACC).

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Pooyan Razi
    • 1
  • Vishnu Venugopal
    • 1
  • Shriram Jagannathan
    • 1
  • Sharath Girimaji
    • 1
    Email author
  1. 1.Texas A&M UniversityCollege StationUSA

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