Rotating turbulence under "precession-like" perturbation

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.

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Author Iyer, K.
Mazzitelli, I.
Bonaccorso, F.
Pouquet, Annick
Biferale, L.
Publisher UCAR/NCAR - Library
Publication Date 2015-12-01T00:00:00
Digital Object Identifier (DOI) Not Assigned
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Topic Category geoscientificInformation
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Metadata Date 2025-07-11T20:53:13.688531
Metadata Record Identifier edu.ucar.opensky::articles:17766
Metadata Language eng; USA
Suggested Citation Iyer, K., Mazzitelli, I., Bonaccorso, F., Pouquet, Annick, Biferale, L.. (2015). Rotating turbulence under "precession-like" perturbation. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d7qv3nzt. Accessed 16 August 2025.

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