Abstract : Experimental and theoretical results for the axially, stably stratified Taylor-Couette flow are presented. The primary instability is a direct Hopf bifurcation. It leads the system into an oscillatory state of confined internal waves, in good agreement with linear stability analysis. The secondary bifurcation, which leads the system to a pattern of drifting nonaxisymmetric vortices, is a subcritical Hopf bifurcation. This first experimental evidence of a global bifurcation is thought to be generic to dynamical systems with one destabilizing and one stabilizing control parameter.
Type de document :
Article dans une revue
Physical Review Letters, American Physical Society, 1999, 83 (23), pp.4647-4650
https://hal.archives-ouvertes.fr/hal-00342028
Contributeur : François Caton
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Soumis le : mercredi 26 novembre 2008 - 15:34:37
Dernière modification le : jeudi 11 janvier 2018 - 16:16:01
François Caton, Béatrice Janiaud, Emil Hopfinger. Primary and secondary Hopf bifurcations in stratified Taylor Couette flow.. Physical Review Letters, American Physical Society, 1999, 83 (23), pp.4647-4650. 〈hal-00342028〉
