Large-Scale Dynamo Action Driven by Velocity Shear and Rotating Convection
Large-Scale Dynamo Action Driven by Velocity Shear and Rotating Convection
By incorporating a large-scale shear flow into turbulent rotating convection, we show that a sufficiently strong shear can promote dynamo action in flows that are otherwise nondynamos. Our results are consistent with a dynamo driven either by the shear-current effect or by a fluctuating $\ensuremath{\alpha}$ effect interacting with the shear, …