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Lagrangian acceleration of passive tracers in statistically-steady rotating turbulence (1307.6672v2)

Published 25 Jul 2013 in physics.flu-dyn

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 \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.

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