Abstract
We report experimental results for the stability boundary in Taylor vortex flow for a system with radius ratio 0.5. For most values of the pattern's wave number, quasistatic measurements of the stability boundary are in excellent agreement with the calculation of Paap and Riecke [Phys. Rev. A 41, 1943 (1990)]. In addition, for large values of the pattern's wave number, performing quenches of the control parameter provided evidence for a new instability which supersedes the usual Eckhaus instability. This new instability is not evident in the quasistatic measurements because of the existence of a nonuniform wave number. We have also observed evidence for this instability with radius ratio 0.74.
Published Version
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