Investigation of high density gradients flows by pulsed digital holographic interferometry

Jean-Michel Desse (1) , François Olchewsky (1) , Zacaria Essaïdi (1) , François Nicolas (2) , David Donjat (2) , Frédéric Champagnat (3) , Fredrich Leopold (4) , Frédérique Jagusinski (4) , Daniel Klatt (4) , Pascal Picart (5)

1 ONERA - The French Aerospace Lab [Lille]
2 ONERA - The French Aerospace Lab [Toulouse]
3 ONERA - The French Aerospace Lab [Palaiseau]
4 ISL - Institut franco-allemand de recherches de Saint-Louis
5 LAUM - Laboratoire d'Acoustique de l'Université du Mans

Pulsed digital holographic interferometry is developed for analyzing high density gradients encountered in transonic and supersonic flows. Three different cases are presented: free supersonic jet, unsteady wake flows around cone and spike at Mach 2.

Mots clés: Holography; Digital holography; Phase unwrapping

Domaines: Acoustique [physics.class-ph]; Optique / photonique; Traitement du signal et de l'image [eess.SP]

Jean-Michel Desse, François Olchewsky, Zacaria Essaïdi, François Nicolas, David Donjat, et al.. Investigation of high density gradients flows by pulsed digital holographic interferometry. Digital Holography and Three-Dimensional Imaging, 2017, JeJu Island, France. pp.M4A.1, ⟨10.1364/DH.2017.M4A.1⟩. ⟨hal-02403110⟩