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Updated: May 2, 2026
06:42
Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
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Nonlinear dynamics and anisotropic structure of rotating sheared turbulence
A Salhi1, F G Jacobitz2, K Schneider3
1Département de Physique, Faculté des Sciences de Tunis, 1060, Tunis, Tunisia and Laboratoire de Mécanique des Fluides et d'Acoustique, Ecole Centrale de Lyon, UMR 5509, CNRS, INSA, UCB, 69134 Ecully Cedex, France.
Summary
Homogeneous turbulence in rotating shear flows shows that nonlinearity cannot always saturate large-scale growth. Rotation
Area of Science:
- Fluid Dynamics
- Turbulence Research
- Rotating Systems
Background:
- Homogeneous turbulence in rotating shear flows presents complex dynamics.
- Understanding the interplay between rotation, shear, and turbulence is crucial.
Purpose of the Study:
- To investigate homogeneous turbulence in rotating shear flows.
- To analyze the impact of rotation on energy transfer and scale interactions.
Main Methods:
- Pseudospectral direct numerical simulation.
- Analytical spectral linear theory (SLT).
- Varying the Coriolis parameter to shear rate ratio.
Main Results:
- Nonlinearity does not always saturate large-scale growth in destabilized/neutral cases.
- Small scales stabilize via energy transfer-dissipation balance.
- Rotation's nonlinear effects are significant in stabilized cases, influencing inertial waves.
- Proudman theorem holds for 2D manifolds unaffected by rotation in SLT.
Conclusions:
- Rotation significantly impacts nonlinear energy transfer and scale stabilization in turbulent shear flows.
- Spectral analysis is key to disentangling linear and nonlinear effects of rotation.
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