V.M. Dulin, D.M. Markovich
Novosibirsk State University,
Kutateladze Institute of Thermophysics

Diagnostics of vortex structures in turbulent flows by PIV

The paper is devoted to description of efficiency of particle image velocimetry (PIV) to resolve large-scale vortices in turbulent shear flows. Principles of PIV estimation of velocity gradient in a turbulent flow and methods to extract large-scale vortices are presented. Several examples of results for a round submerged jet, including cases with swirl and combustion, are discussed.
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