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We investigate the localised spatial growth of two-dimensional disturbances governed by the long-wavelength Orr-Sommerfeld operator in a rigid channel at sub-transition Reynolds numbers. We discuss the link between this growth and vorticity waves, a striking feature of the self-excited oscillations that arise when flow is driven through a finite-length channel, one wall of which contains a segment of flexible membrane. © 2010 Springer Science+Business Media B.V.

Original publication

DOI

10.1007/978-90-481-3723-7-64

Type

Journal article

Journal

IUTAM Bookseries

Publication Date

01/12/2010

Volume

18

Pages

397 - 402