Volume 49, Number 3, February I 2000
|Page(s)||329 - 335|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||01 September 2002|
A new perturbation method. Application to the Bénard-von Kármán instability in the subcritical regime
Laboratoire de Physique (UMR 5672) - Ecole Normale Supérieure de Lyon
46 Allée d'Italie 69364 Lyon, France
2 Departamento de Ingeniería Mecánica - Universidad de Chile Casilla 2777, Santiago, Chile
Accepted: 24 November 1999
We report an experimental perturbation method to produce local spatio-temporal velocity perturbations. It has been successfully tested on the Bénard-von Kármán instability for a circular cylinder at subcritical Reynolds numbers . It is found to be useful in determining some physical properties of the instability.
PACS: 47.20.-k – Hydrodynamic stability / 05.45.-a – Nonlinear dynamics and nonlinear dynamical systems / 47.15.-x – Laminar flows
© EDP Sciences, 2000
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