The linear impulse response for disturbances in an oscillatory stokes layer

Christopher Davies, Christian Thomas, Andrew P. Bassom, Peter J. Blennerhassett

Research output: Contribution to journalConference paper

Abstract

Numerical simulation results are reported for the linear evolution of disturbances in a flat oscillatory Stokes layer. A spatially localised form of impulsive forcing is applied. The subsequent disturbance development displays an intriguing family tree-like structure, which involves the birth of successive generations of wavepackets. The complexity of this response is likely to lead to some difficulties in the interpretation of data obtained from physical experiments. It is also noted that important features of the wavepacket behaviour can be accounted for using linear stability results based upon Floquet theory.

Original languageEnglish
Pages (from-to)269-272
Number of pages4
JournalAIP Conference Proceedings
Volume1558
Issue number1
DOIs
Publication statusPublished - 17 Oct 2013
Externally publishedYes
Event11th International Conference of Numerical Analysis and Applied Mathematics 2013, ICNAAM 2013 - Rhodes, Greece
Duration: 21 Sep 201327 Sep 2013

Keywords

  • Boundary layer
  • flow instability
  • oscillatory flow
  • wavepackets
  • impulse response

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