Holographic particle velocimetry: a 3D measurement technique for vortex interactions, coherent structures and turbulence

Hui Meng, Fazle Hussain

Research output: Contribution to journalArticle

70 Scopus citations

Abstract

To understand the topology and dynamics of coherent structures (CS), the interactions of CS with fine-scale turbulence, and the effects of CS on entrainment, mixing and combustion, experimental tools are needed that can measure velocity (preferably vorticity) vector fields in both 3D space and time. While traditional measurement techniques are not able to serve this purpose, holographic particle velocimetry (HPV) appears to be promising. In a demonstration experiment, the instantaneous 3D velocity vector fields in some simple vortical flows have been obtained using the HPV technique. In this preliminary report, the principles of the HPV technique are illustrated and the key issues in its implementation are discussed.

Original languageEnglish
Pages (from-to)33-52
Number of pages20
JournalFluid Dynamics Research
Volume8
Issue number1-4
DOIs
StatePublished - Oct 1991

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