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Small-scale universality in the spectral structure of transitional pipe flows
Turbulent flows are not only everywhere, but every turbulent flow is the same at small scales. The extraordinary simplification engendered by this “small-scale universality” is a hallmark of turbulence theory. However, on the basis of the restrictive assumptions invoked by A. N. Kolmogorov to demons...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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American Association for the Advancement of Science
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6981085/ https://www.ncbi.nlm.nih.gov/pubmed/32042893 http://dx.doi.org/10.1126/sciadv.aaw6256 |
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author | Cerbus, Rory T. Liu, Chien-chia Gioia, Gustavo Chakraborty, Pinaki |
author_facet | Cerbus, Rory T. Liu, Chien-chia Gioia, Gustavo Chakraborty, Pinaki |
author_sort | Cerbus, Rory T. |
collection | PubMed |
description | Turbulent flows are not only everywhere, but every turbulent flow is the same at small scales. The extraordinary simplification engendered by this “small-scale universality” is a hallmark of turbulence theory. However, on the basis of the restrictive assumptions invoked by A. N. Kolmogorov to demonstrate this universality, it is widely thought that only idealized turbulent flows conform to this framework. Using experiments and simulations that span a wide range of Reynolds number, we show that small-scale universality governs the spectral structure of a class of flows with no apparent ties to the idealized flows: transitional pipe flows. Our results not only extend the universality of Kolmogorov’s framework beyond expectation but also establish an unexpected link between transitional pipe flows and Kolmogorovian turbulence. |
format | Online Article Text |
id | pubmed-6981085 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-69810852020-02-10 Small-scale universality in the spectral structure of transitional pipe flows Cerbus, Rory T. Liu, Chien-chia Gioia, Gustavo Chakraborty, Pinaki Sci Adv Research Articles Turbulent flows are not only everywhere, but every turbulent flow is the same at small scales. The extraordinary simplification engendered by this “small-scale universality” is a hallmark of turbulence theory. However, on the basis of the restrictive assumptions invoked by A. N. Kolmogorov to demonstrate this universality, it is widely thought that only idealized turbulent flows conform to this framework. Using experiments and simulations that span a wide range of Reynolds number, we show that small-scale universality governs the spectral structure of a class of flows with no apparent ties to the idealized flows: transitional pipe flows. Our results not only extend the universality of Kolmogorov’s framework beyond expectation but also establish an unexpected link between transitional pipe flows and Kolmogorovian turbulence. American Association for the Advancement of Science 2020-01-24 /pmc/articles/PMC6981085/ /pubmed/32042893 http://dx.doi.org/10.1126/sciadv.aaw6256 Text en Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Cerbus, Rory T. Liu, Chien-chia Gioia, Gustavo Chakraborty, Pinaki Small-scale universality in the spectral structure of transitional pipe flows |
title | Small-scale universality in the spectral structure of transitional pipe flows |
title_full | Small-scale universality in the spectral structure of transitional pipe flows |
title_fullStr | Small-scale universality in the spectral structure of transitional pipe flows |
title_full_unstemmed | Small-scale universality in the spectral structure of transitional pipe flows |
title_short | Small-scale universality in the spectral structure of transitional pipe flows |
title_sort | small-scale universality in the spectral structure of transitional pipe flows |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6981085/ https://www.ncbi.nlm.nih.gov/pubmed/32042893 http://dx.doi.org/10.1126/sciadv.aaw6256 |
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