Universality of oscillatory instabilities in fluid mechanical systems

Morales, Vladimir Garcia; Tandon, Shruti; Kurths, Jürgen; Sujith, R. I.

doi:10.1088/1367-2630/ad2bb1

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Universality of oscillatory instabilities in fluid mechanical systems

Authors

Morales, Vladimir Garcia
External Organizations;

Tandon, Shruti
External Organizations;

/persons/resource/Juergen.Kurths

Kurths, Jürgen
Potsdam Institute for Climate Impact Research;

Sujith, R. I.
External Organizations;

URL

There are no locators available

フルテキスト (公開)

García-Morales_2024_New_J._Phys._26_033005.pdf
(出版社版), 911KB

付随資料 (公開)

There is no public supplementary material available

引用

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

引用: https://publications.pik-potsdam.de/pubman/item/item_29690

要旨

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.