title: Localized modulation of rotating waves in Taylor-Couette flow.
abstract: We report the results of an experimental study on the multiplicity of states in Taylor-Couette flow as a result of axial localization of azimuthally rotating waves. Localized states have been found to appear hysteretically from time-dependent Taylor-Couette flow at Reynolds numbers significantly above the onset of wavy Taylor vortices. These localized states have the shape of a modulated rotating wave and differ significantly from global modulated wavy Taylor vortex states in their spatial characteristics. Axial localization of rotating waves is accompanied with a significant increase in size of the underlying pair of Taylor vortices. Our work reveals that localization provides a mechanism for the appearance of multiple time-dependent states in Taylor-Couette flow.
authors.affiliation: Institute of Experimental and Applied Physics, University of Kiel, Germany. janabshagen@bundeswehr.org
authors.forename: J
authors.initials: J
authors.lastname: Abshagen
authors.forename: J
authors.initials: J
authors.lastname: von Stamm
authors.forename: M
authors.initials: M
authors.lastname: Heise
authors.forename: Ch
authors.initials: Ch
authors.lastname: Will
authors.forename: G
authors.initials: G
authors.lastname: Pfister