Convection in rotating annuli: Ginzburg-Landau equations with tunable coefficients
Abstract
The coefficients of the complex Ginzburg-Landau equations that describe weakly nonlinear convection in a large rotating annulus are calculated for a range of Prandtl numbers σ. For fluids with σ ≈ 0.15, we show that the rotation rate can tune the coefficients of the corresponding amplitude equations from regimes where coherent patterns prevail to regimes of spatio-temporal chaos.
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