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