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  Universality of oscillatory instabilities in fluid mechanical systems

Morales, V. G., Tandon, S., Kurths, J., Sujith, R. I. (2024): Universality of oscillatory instabilities in fluid mechanical systems. - New Journal of Physics, 26, 033005.
https://doi.org/10.1088/1367-2630/ad2bb1

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García-Morales_2024_New_J._Phys._26_033005.pdf (Publisher version), 911KB
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 Creators:
Morales, Vladimir Garcia1, Author
Tandon, Shruti1, Author
Kurths, Jürgen2, Author              
Sujith, R. I.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, ou_persistent13              

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 Abstract: Oscillatory instability emerges amidst turbulent states in experiments in various turbulent fluid and thermo-fluid systems such as aero-acoustic, thermoacoustic and aeroelastic systems. For the time series of the relevant dynamic variable at the onset of the oscillatory instability, universal scaling behaviors have been discovered in experiments via the Hurst exponent and certain spectral measures. By means of a center manifold reduction, the spatiotemporal dynamics of these real systems can be mapped to a complex Ginzburg–Landau equation with a linear global coupling. In this work, we show that this model is able to capture the universal behaviors of the route to oscillatory instability, elucidating it as a transition from defect to phase turbulence mediated by the global coupling.

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Language(s): eng - English
 Dates: 2024-02-212024-03-082024-03-08
 Publication Status: Finally published
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1088/1367-2630/ad2bb1
MDB-ID: No data to archive
PIKDOMAIN: RD4 - Complexity Science
Organisational keyword: RD4 - Complexity Science
Research topic keyword: Complex Networks
Research topic keyword: Nonlinear Dynamics
OATYPE: Gold Open Access
 Degree: -

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Title: New Journal of Physics
Source Genre: Journal, SCI, Scopus, p3, oa
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Pages: - Volume / Issue: 26 Sequence Number: 033005 Start / End Page: - Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/1911272
Publisher: IOP Publishing