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Updated: Mar 21, 2026

Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
Defect-mediated turbulence in ribbons of viscoelastic Taylor-Couette flow
Noureddine Latrache1, Nizar Abcha2, Olivier Crumeyrolle3
1Université de Brest, FRE CNRS 3744 IRDL, 29238 Brest, France.
Abstract:
Transition to defect-mediated turbulence in the ribbon patterns observed in a viscoelastic Taylor-Couette flow is investigated when the rotation rate of the inner cylinder is increased while the outer cylinder is fixed. In four polymer solutions with different values of the elasticity number, the defects appear just above the onset of the ribbon pattern and trigger the appearance of disordered oscillations when the rotation rate is increased. The flow structure around the defects is determined and the statistical properties of these defects are analyzed in the framework of the complex Ginzburg-Landau equation.
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