Growing pseudo-eigenmodes and positive logarithmic norms in rotating shear flows
Growing pseudo-eigenmodes and positive logarithmic norms in rotating shear flows
Rotating shear flows, when angular momentum increases and angular velocity decreases as functions of radiation coordinate, are hydrodynamically stable under linear perturbation. The Keplerian flow is an example of such a system, which appears in an astrophysical context. Although decaying eigenmodes exhibit large transient energy growth of perturbation which could …