Evolution of disturbance wavepackets in an oscillatory Stokes layer

Thomas, Christian, Davies, Christopher, Bassom, Andrew P. and Blennerhassett, P. J. 2014. Evolution of disturbance wavepackets in an oscillatory Stokes layer. Journal of Fluid Mechanics 752 , pp. 543-571. 10.1017/jfm.2014.291

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Abstract

Numerical simulation results are presented for the linear and nonlinear evolution of disturbances in a at Stokes layer. The response to a spatially localised impulsive forcing is investigated and it is found that the spatial-temporal development of the ow 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 Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Mathematics
Subjects:	Q Science > QA Mathematics
Uncontrolled Keywords:	Absolute/convective instability; boundary layer stability; transition to turbulence.
Additional Information:	Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/0022-1120/ (accessed 11/06/2014)(post print) Pdf uploaded in accordance with the publisher’s policy at http://www.sherpa.ac.uk/romeo/issn/0022-1120/ (accessed 18/08/2014)(published version)
Publisher:	Cambridge University Press
ISSN:	0022-1120
Funders:	Australian Research Council
Date of First Compliant Deposit:	30 March 2016
Last Modified:	28 Nov 2020 05:00
URI:	http://orca.cf.ac.uk/id/eprint/60507

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