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This article has an erratum: [https://doi.org/10.1051/0004-6361/202040161e]


Fig. 11.

image

Vorticity squared (top panel) and current density squared (bottom panel) integrated over the whole computational domain as a function of simulation time for both thin-layer (l/R = 0.4) and thick-layer (l/R = 1.5) cases. Red solid lines correspond to linear analytic results, and blue dashed lines correspond to nonlinear numerical results. Vorticity is normalized to the value at t = 0. No normalization is needed for current density since it vanishes at t = 0.

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