Lagrangian acceleration of passive tracers in statistically-steady rotating turbulence

Abstract

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 Ω and local velocity vector u. The auto-correlation of the acceleration component in the plane set up by Ω and u is only mildly enhanced.

4 pages, 4 figures, 1 table

References in corpus (3)

• Lagrangian dynamics and statistical geometric structure of turbulence
• Experimental measurement of acceleration correlations and pressure structure functions in high Reynolds number turbulence
• Lagrangian velocity auto-correlations in statistically-steady rotating turbulence

Cited by in corpus (8)

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• Statistics of Lagrangian Trajectories in a Rotating Turbulent Flow
• Multi-particle Lagrangian statistics in homogeneous rotating turbulence
• Geometrical statistics of the vorticity vector and the strain rate tensor in rotating turbulence
• Heavy inertial particles in rotating turbulence : distribution of particles in flow and evolution of Lagrangian trajectories