Dynamic mode decomposition of inertial particle caustics in Taylor–Green flow

Inertial particles advected by a background flow can show complex structures. We consider inertial particles in a 2D Taylor–Green (TG) flow and characterize particle dynamics as a function of the particle’s Stokes number using dynamic mode decomposition (DMD) method from particle image velocimetry (...

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Autores principales: Samant, Omstavan, Alageshan, Jaya Kumar, Sharma, Sarveshwar, Kuley, Animesh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8128860/
https://www.ncbi.nlm.nih.gov/pubmed/34001985
http://dx.doi.org/10.1038/s41598-021-89953-3
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author Samant, Omstavan
Alageshan, Jaya Kumar
Sharma, Sarveshwar
Kuley, Animesh
author_facet Samant, Omstavan
Alageshan, Jaya Kumar
Sharma, Sarveshwar
Kuley, Animesh
author_sort Samant, Omstavan
collection PubMed
description Inertial particles advected by a background flow can show complex structures. We consider inertial particles in a 2D Taylor–Green (TG) flow and characterize particle dynamics as a function of the particle’s Stokes number using dynamic mode decomposition (DMD) method from particle image velocimetry (PIV) like-data. We observe the formation of caustic structures and analyze them using DMD to (a) determine the Stokes number of the particles, and (b) estimate the particle Stokes number composition. Our analysis in this idealized flow will provide useful insight to analyze inertial particles in more complex or turbulent flows. We propose that the DMD technique can be used to perform similar analysis on an experimental system.
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spelling pubmed-81288602021-05-19 Dynamic mode decomposition of inertial particle caustics in Taylor–Green flow Samant, Omstavan Alageshan, Jaya Kumar Sharma, Sarveshwar Kuley, Animesh Sci Rep Article Inertial particles advected by a background flow can show complex structures. We consider inertial particles in a 2D Taylor–Green (TG) flow and characterize particle dynamics as a function of the particle’s Stokes number using dynamic mode decomposition (DMD) method from particle image velocimetry (PIV) like-data. We observe the formation of caustic structures and analyze them using DMD to (a) determine the Stokes number of the particles, and (b) estimate the particle Stokes number composition. Our analysis in this idealized flow will provide useful insight to analyze inertial particles in more complex or turbulent flows. We propose that the DMD technique can be used to perform similar analysis on an experimental system. Nature Publishing Group UK 2021-05-17 /pmc/articles/PMC8128860/ /pubmed/34001985 http://dx.doi.org/10.1038/s41598-021-89953-3 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Samant, Omstavan
Alageshan, Jaya Kumar
Sharma, Sarveshwar
Kuley, Animesh
Dynamic mode decomposition of inertial particle caustics in Taylor–Green flow
title Dynamic mode decomposition of inertial particle caustics in Taylor–Green flow
title_full Dynamic mode decomposition of inertial particle caustics in Taylor–Green flow
title_fullStr Dynamic mode decomposition of inertial particle caustics in Taylor–Green flow
title_full_unstemmed Dynamic mode decomposition of inertial particle caustics in Taylor–Green flow
title_short Dynamic mode decomposition of inertial particle caustics in Taylor–Green flow
title_sort dynamic mode decomposition of inertial particle caustics in taylor–green flow
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8128860/
https://www.ncbi.nlm.nih.gov/pubmed/34001985
http://dx.doi.org/10.1038/s41598-021-89953-3
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