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Evolution of disturbance wavepackets in an oscillatory Stokes layer


Thomas, C and Davies, C and Bassom, AP and Blennerhassett, PJ, Evolution of disturbance wavepackets in an oscillatory Stokes layer, Journal of Fluid Mechanics, 752 pp. 543-571. ISSN 0022-1120 (2014) [Refereed Article]

Copyright Statement

Copyright Cambridge University Press 2014

DOI: doi:10.1017/jfm.2014.291


Numerical simulation results are presented for the linear and nonlinear evolution of disturbances in a flat Stokes layer. The response to a spatially localised impulsive forcing is investigated and it is found that the spatial–temporal development of the flow displays an intriguing family-tree-like structure, which involves the birth of successive generations of distinct wavepacket components. It is shown that some features of this unexpected structure can be predicted using the results of a linear stability analysis based on Floquet theory.

Item Details

Item Type:Refereed Article
Keywords:absolute/convective instability, boundary layer stability, transition to turbulence
Research Division:Mathematical Sciences
Research Group:Applied mathematics
Research Field:Theoretical and applied mechanics
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the mathematical sciences
UTAS Author:Bassom, AP (Professor Andrew Bassom)
ID Code:105785
Year Published:2014
Web of Science® Times Cited:17
Deposited By:Mathematics and Physics
Deposited On:2016-01-14
Last Modified:2017-11-01

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