Short-wavelength local stability analysis is performed of a helical base flow of an incompressible fluid in a differentially rotating cylindrical annulus with radial temperature gradient and an Archimedean buoyancy. A new explicit generalized Rayleigh criterion that mixes the Eckhoff-Leibovich-Stewartson (ELS) criterion for instability of helical flows and the Goldreich-Schubert-Fricke (GSF) criterion for the instability of azimuthal flows with radial temperature gradient, is derived.
|Number of pages||1|
|Publication status||Accepted/In press - 28 Sept 2023|
|Event||Multiple Instabilities and transition to turbulence - University of Normandy - Le Havre, Le Havre, France|
Duration: 28 Sept 2023 → 29 Sept 2023
|Workshop||Multiple Instabilities and transition to turbulence|
|Period||28/09/23 → 29/09/23|