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Local anisotropy of laboratory two-dimensional turbulence affects pair dispersion

Xia, Hua; Francois, Nicolas; Faber, Benjamin; Punzmann, Horst; Shats, Michael

Description

Experimental investigation of particle pair separation is conducted in two types of laboratory two-dimensional turbulence under a broad range of experimental conditions. In the range of scales corresponding to the inverse energy cascade inertial interval, the particle pair separation exhibits diffusive behaviour. The analysis of the pair velocity correlations suggests the existence of coherent bundles or clusters of non-diverging fluid particles. Such bundles are also detected using a recently...[Show more]

CollectionsANU Research Publications
Date published: 2019-02-13
Type: Journal article
URI: http://hdl.handle.net/1885/205294
Source: Physics of Fluids
DOI: 10.1063/1.5082851
Access Rights: Open Access

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