Interferometric out-of-focus imaging for the 3D tracking of spherical bubbles in a cylindrical channel

H. Shen (1) , S. Saengkaew (1) , G. Gréhan (1) , S. Coetmellec (1) , Marc Brunel (1)

1 CORIA - Complexe de recherche interprofessionnel en aérothermochimie

We present an original interferometric out-of-focus imaging set-up to track the 3D position and the size of spherical bubbles in a cylindrical channel. Experimental results confirm theoretical predictions. Using a double acquisition, a 3 component velocimetry of bubbles can be performed simultaneously with size measurements.

Mots clés: 3D measurement; ABCD transfer matrices; Interferometric out-of-focus imaging

Domaines: Optique / photonique

H. Shen, S. Saengkaew, G. Gréhan, S. Coetmellec, Marc Brunel. Interferometric out-of-focus imaging for the 3D tracking of spherical bubbles in a cylindrical channel. Optics Communications, 2014, 320, pp.156-161. ⟨10.1016/j.optcom.2014.01.020⟩. ⟨hal-02112745⟩