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

Samant, O and Alageshan, JK and Sharma, S and Kuley, A (2021) Dynamic mode decomposition of inertial particle caustics in Taylor�Green flow. In: Scientific Reports, 11 (1).

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Official URL: https://doi.org/10.1038/s41598-021-89953-3


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. © 2021, The Author(s).

Item Type: Journal Article
Publication: Scientific Reports
Publisher: Nature Research
Additional Information: The copyright for this article belongs to Authors
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 18 Aug 2021 05:52
Last Modified: 18 Aug 2021 05:52
URI: http://eprints.iisc.ac.in/id/eprint/69158

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