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Lagrangian particle tracking in high Reynolds number turbulence

  • Kelken Chang
  • Nicholas T. Ouellette
  • Haitao Xu
  • Eberhard Bodenschatz
Conference paper
  • 1.2k Downloads
Part of the ERCOFTAC Series book series (ERCO, volume 11)

Abstract

We describe a Lagrangian particle tracking technique that can be applied to high Reynolds number turbulent flows. This technique produces three-dimensional Lagrangian trajectories of multiple particles, from which both Lagrangian and Eulerian statistics can be obtained. We illustrate the application of this technique with measurements performed in a von Ká rmán swirling flow generated in a vertical cylindrical tank between two counter-rotating baffled disks. The Taylor microscale Reynolds number investigated runs from 200 to 815. The Kolmogorov time scale of the flow was resolved and both the turbulent velocity and acceleration were obtained and their probability density functions measured. Measurements of the Eulerian and Lagrangian velocity structure functions are presented. The average energy dissipation rates are determined from the Eulerian velocity structure functions.

Keywords

Inertial Subrange Kolmogorov Length Scale Reynolds Number Dependence Lagrangian Particle Tracking Velocity Structure Function 
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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Copyright information

© Springer 2007

Authors and Affiliations

  • Kelken Chang
    • 1
    • 2
  • Nicholas T. Ouellette
    • 1
    • 2
  • Haitao Xu
    • 1
    • 2
  • Eberhard Bodenschatz
    • 1
    • 2
  1. 1.Max Planck Institute for Dynamics and Self-OrganizationGöttingenGermany
  2. 2.Laboratory of Atomic and Solid State PhysicsCornell UniversityIthacaUSA

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