Evolution of disturbance wavepackets in an oscillatory Stokes layer

Thomas, Christian, Davies, Christopher ORCID: https://orcid.org/0000-0002-5592-9541, 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

Preview

PDF - Accepted Post-Print Version Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (10MB) | Preview

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:	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:	12 Nov 2024 15:15
URI:	https://orca.cardiff.ac.uk/id/eprint/60507

Citation Data

Cited 18 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item