Mixing dynamics in interacting vortices

Basu, S and Chaudhuri, S and Cetegen, BM and Saha, A (2018) Mixing dynamics in interacting vortices. [Book Chapter]

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Abstract

Mixing dynamics arising from the interaction of two convecting line vortices of different strengths and time delays have been investigated in this chapter. Experimentally obtained planar laser induced fluorescence images of acetone vortices mixing in air are thoroughly substantiated with computational modeling and analysis. Same and opposite direction of rotation, generating vortex pairs and couples were found to augment and dissipate species mixing respectively as indicated by global scalar statistics like mean and variance. Local mixing characteristics are analyzed using joint probability density function of vorticity and species concentration. This quantitatively showed how mixing is dissipated or augmented for individual vortices and at different vorticity magnitudes, even by the decaying and apparently indiscernible presence of a favorable or unfavorable direction of rotation of the preceding vortex.

Item Type:	Book Chapter
Publication:	Green Energy and Technology
Publisher:	Springer Verlag
Additional Information:	The copyright for this article belongs to Springer Verlag
Keywords:	Acetone; Mixing; Probability density function; Rotation; Vorticity, Computational model; Direction of rotation; Joint probability density function; Local mixing; Mixing dynamics; Planar laser induced fluorescence; Species concentration; Vorticity magnitudes, Vortex flow
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering) Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	02 Sep 2022 05:53
Last Modified:	02 Sep 2022 05:53
URI:	https://eprints.iisc.ac.in/id/eprint/76041

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