Interferometric Laser imaging technique applied to nuclei size measurements in cavitation tunnel

L. Mees (1) , Denis Lebrun (2) , Didier Fréchou (3) , Romuald Boucheron (3)

1 LMFA - Laboratoire de Mecanique des Fluides et d'Acoustique
2 CORIA - Complexe de recherche interprofessionnel en aérothermochimie
3 DGA Techniques hydrodynamiques

Interferometric Laser Imaging Technique (ILIT) is applied to nuclei size measurements in cavitation tunnel. The use of a large collection angle optics is needed to allow nuclei size measurement down to 10 µm at 1 m distance. The negative effect of spherical aberration in such a situation is exhibited. A lens assembly, free from spherical aberrations and specifically designed for this application is presented. Measurements in a cavitation tunnel shows nuclei size distributions in the range 10-200µm. In addition to bubble sizes, ILIT can provide information on bubble concentration. To do so, a measurement volume is defined from statistical information extracted from the ILIT results themselves.

Domaines: Sciences de l'ingénieur [physics]

L. Mees, Denis Lebrun, Didier Fréchou, Romuald Boucheron. Interferometric Laser imaging technique applied to nuclei size measurements in cavitation tunnel. 2nd International Conference on Advanced Model Measurement Technology for EU Maritime Industry (AMT'11), Apr 2011, Newcastel upon Tyne, United Kingdom. ⟨hal-02414372⟩