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On acoustically modulated jet shear layers and the Nyquist–Shannon sampling theorem

Abstract:

The goal of this paper is to present the behavior of a jet shear layer in response to acoustic excitation from a signal processing perspective. The main idea is that the vortices that roll-up in the jet shear layer are similar to the discrete samples of a digital control system, and, hence, that the Nyquist–Shannon sampling theorem should apply. We further hypothesize that the strength of a vortex is determined by the mean amplitude of the excitation waveform during its creation. We also argu...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1063/5.0118025

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
ORCID:
0000-0003-2819-193X
More by this author
Role:
Author
ORCID:
0000-0003-0873-8651
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
ORCID:
0000-0001-6699-5301
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Oxford college:
Jesus College
Role:
Author
ORCID:
0000-0002-5509-7925
More by this author
Role:
Author
ORCID:
0000-0002-2837-7032
Publisher:
AIP Publishing
Journal:
Physics of Fluids More from this journal
Volume:
34
Issue:
11
Article number:
115106
Publication date:
2022-10-04
Acceptance date:
2022-10-02
DOI:
EISSN:
1089-7666
ISSN:
1070-6631
Language:
English
Keywords:
Pubs id:
1310351
Local pid:
pubs:1310351
Deposit date:
2022-12-09

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