Centrifugal instability of pulsed flow

A. Aouidef; C. Normand; A. Stegner; J. E. Wesfreid

doi:10.1063/1.868423

Centrifugal instability of pulsed flow

A. Aouidef, C. Normand, A. Stegner, J. E. Wesfreid

Research output: Contribution to journal › Article › peer-review

Abstract

The stability of a pulsed flow in a Taylor-Couette geometry with both cylinders rotating at the same angular velocity Ω(t) = Ω₀ cos(ωt) is investigated. The first experimental evidence showing that the flow is less unstable in the limit of low and high frequency while destabilization is maximum for an intermediate frequency ω₀ is reported. A detailed analysis of the restabilization at frequencies just above ω₀ reveals a behavior not accounted for by previous theoretical analysis. Thus, the linear stability analysis is reconsidered by using a different implementation of the Floquet theory and a satisfactory agreement with the present experimental results is found.

Original language	English
Pages (from-to)	3665-3676
Number of pages	12
Journal	Physics of Fluids
Volume	6
Issue number	11
DOIs	https://doi.org/10.1063/1.868423
Publication status	Published - 1 Jan 1994
Externally published	Yes

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10.1063/1.868423

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title = "Centrifugal instability of pulsed flow",

abstract = "The stability of a pulsed flow in a Taylor-Couette geometry with both cylinders rotating at the same angular velocity Ω(t) = Ω0 cos(ωt) is investigated. The first experimental evidence showing that the flow is less unstable in the limit of low and high frequency while destabilization is maximum for an intermediate frequency ω0 is reported. A detailed analysis of the restabilization at frequencies just above ω0 reveals a behavior not accounted for by previous theoretical analysis. Thus, the linear stability analysis is reconsidered by using a different implementation of the Floquet theory and a satisfactory agreement with the present experimental results is found.",

author = "A. Aouidef and C. Normand and A. Stegner and Wesfreid, \{J. E.\}",

year = "1994",

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T1 - Centrifugal instability of pulsed flow

AU - Aouidef, A.

AU - Normand, C.

AU - Stegner, A.

AU - Wesfreid, J. E.

PY - 1994/1/1

Y1 - 1994/1/1

N2 - The stability of a pulsed flow in a Taylor-Couette geometry with both cylinders rotating at the same angular velocity Ω(t) = Ω0 cos(ωt) is investigated. The first experimental evidence showing that the flow is less unstable in the limit of low and high frequency while destabilization is maximum for an intermediate frequency ω0 is reported. A detailed analysis of the restabilization at frequencies just above ω0 reveals a behavior not accounted for by previous theoretical analysis. Thus, the linear stability analysis is reconsidered by using a different implementation of the Floquet theory and a satisfactory agreement with the present experimental results is found.

AB - The stability of a pulsed flow in a Taylor-Couette geometry with both cylinders rotating at the same angular velocity Ω(t) = Ω0 cos(ωt) is investigated. The first experimental evidence showing that the flow is less unstable in the limit of low and high frequency while destabilization is maximum for an intermediate frequency ω0 is reported. A detailed analysis of the restabilization at frequencies just above ω0 reveals a behavior not accounted for by previous theoretical analysis. Thus, the linear stability analysis is reconsidered by using a different implementation of the Floquet theory and a satisfactory agreement with the present experimental results is found.

U2 - 10.1063/1.868423

DO - 10.1063/1.868423

M3 - Article

AN - SCOPUS:0028005231

SN - 1070-6631

VL - 6

SP - 3665

EP - 3676

JO - Physics of Fluids

JF - Physics of Fluids

IS - 11

ER -

Centrifugal instability of pulsed flow

Abstract

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