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Lagrangian acceleration of passive tracers in statistically-steady rotating turbulence

arXiv.org, Jul 26, 2013 [Peer Reviewed Journal]

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  • Title:
    Lagrangian acceleration of passive tracers in statistically-steady rotating turbulence
  • Author: Clercx, Herman
  • Contributor: Clercx, Herman (pacrepositoryorg)
  • Found In: arXiv.org, Jul 26, 2013 [Peer Reviewed Journal]
  • Subjects: Particle Tracking ; Turbulent Flow ; Tracers ; Velocity Measurement ; Acceleration ; Autocorrelation ; Turbulence ; Rotation ; Particle Tracking Velocimetry
  • Language: English
  • Description: The statistical properties of the Lagrangian acceleration vector of passive tracers in statistically-steady rotating turbulence is studied by Particle Tracking Velocimetry. Direct effects of the background rotation are the suppression of high-acceleration events parallel to the (vertical) rotation axis, the enhancement of high-acceleration events for the horizontal acceleration, and the strong amplification of the auto-correlation of the acceleration component perpendicular to both the rotation vector \Omega\ and local velocity vector u. The auto-correlation of the acceleration component in the plane set up by \Omega\ and u is only mildly enhanced.
  • Identifier: DOI: 10.1103/PhysRevLett.107.214502

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