Rotating turbulence under "precession-like" perturbation

AMS Citation:
Iyer, K. P., I. Mazzitelli, F. Bonaccorso, A. Pouquet, and L. Biferale, 2015: Rotating turbulence under "precession-like" perturbation. European Physical Journal E, 38, 7 pp, doi:10.1140/epje/i2015-15128-x.
Date:2015-12-01
Resource Type:article
Title:Rotating turbulence under "precession-like" perturbation
Abstract: The effects of changing the orientation of the rotation axis on homogeneous turbulence is considered. We perform direct numerical simulations on a periodic box of 10243 grid points, where the orientation of the rotation axis is changed (a) at a fixed time instant (b) regularly at time intervals commensurate with the rotation time scale. The former is characterized by a dominant inverse energy cascade whereas in the latter, the inverse cascade is stymied due to the recurrent changes in the rotation axis resulting in a strong forward energy transfer and large-scale structures that resemble those of isotropic turbulence.
Peer Review:Refereed
Copyright Information:Copyright 2015 EDP Sciences.
OpenSky citable URL: ark:/85065/d7qv3nzt
Publisher's Version: 10.1140/epje/i2015-15128-x
Author(s):
  • Kartik Iyer
  • Irene Mazzitelli
  • Fabio Bonaccorso
  • Annick Pouquet - NCAR/UCAR
  • Luca Biferale
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