28th Congress of the International Council of the Aeronautical Sciences, 23 - 28 September 2012, Brisbane, Australia
Paper ICAS 2012-3.11.3

SUBSONIC WAKE FLOWS ANALYSIS BY DIGITAL THREE-WAVELENGTHS HOLOGRAPHIC INTERFEROMETRY

J. -M. Desse, P. Picart*
ONERA, France; *LAUM - CNRS, France

Keywords: digital color holographic interferometry, wake flows

Digital colour holographic interferometry is developed for analyzing unsteady wake flows. From phase difference maps computed with and without flow, the evolution in time of instantaneous gas density field is obtained so that the mean flow deduced from instantaneous gas density maps covering one cycle of the vortex street.

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