Experimental study of a counter-flow jet in onera’s S1MA wind tunnel by 3D background oriented Schlieren

Francois Nicolas (1) , David Donjat (2) , Francis Micheli (2) , Guy Le Besnerais (3) , Aurelien Plyer (3) , Philippe Cornic (3) , Frédéric Champagnat (3) , Yannick Michou (1)

1 ONERA - The French Aerospace Lab [Modane]
2 DMPE, ONERA, Université de Toulouse [Toulouse]
3 DTIS, ONERA, Université Paris Saclay (COmUE) [Palaiseau]

This paper describes an application of 3D density reconstruction from a limited number of Background Oriented Schlieren (BOS) images in a large high speed wind tunnel. The tested flow is a counter-flowing hot jet facing the transonic main flow. Ray deviation maps captured by 12 synchronized cameras are combined to reconstruct the three dimensional density field of the jet, in the line of the direct 3D BOS technique proposed by ONERA.

Mots clés: BACKGROUND ORIENTED SCHLIEREN; DENSITY MEASUREMENT; FLOW VISUALIZATION; HIGH SPEED FLOWS; WIND TUNNEL; counter flow jet

Mots clés: MESURE DE MASSE VOLUMIQUE; VISUALISATION DES ECOULEMENTS; SUPERSONIQUE; SOUFFLERIE; JET A CONTRE-COURANT

Domaines: Mécanique des fluides [physics.class-ph]

Francois Nicolas, David Donjat, Francis Micheli, Guy Le Besnerais, Aurelien Plyer, et al.. Experimental study of a counter-flow jet in onera’s S1MA wind tunnel by 3D background oriented Schlieren. ISFV 18, Jun 2018, ZURICH, Switzerland. ⟨hal-02000679⟩