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  • Title: Instability and equilibration of centrifugally stable stratified Taylor-Couette flow.
    Author: Molemaker MJ, McWilliams JC, Yavneh I.
    Journal: Phys Rev Lett; 2001 Jun 04; 86(23):5270-3. PubMed ID: 11384475.
    Abstract:
    The flow between two concentric cylinders, V(r), is studied analytically and computationally for a fluid with stable axial density stratification. A sufficient condition for linear, inviscid instability is d(V/r)(2)/dr<0 (i.e., all anticyclonically sheared flows) rather than the Rayleigh condition for centrifugal instability, d(Vr)(2)/dr<0. This implies a far wider range of instability than previously identified. The instability persists with finite viscosity and nonlinearity, leading to chaos and fully developed turbulence through a sequence of bifurcations. Laboratory tests are feasible and desirable.
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