title: Critical angle refractometry and sizing of bubble clouds.
abstract: The principle of the critical angle refractometry and sizing technique is extended to characterize the size distribution and the mean refractive index of clouds of bubbles. For a log-normal bubble-size distribution, simulations show that the mean size, the relative width of the size distribution, and the mean refractive index of the bubbles have a particular and easily identified influence on the critical scattering patterns. Preliminary experimental results on air bubble/water flows clearly demonstrate the potential and robustness of this new technique for bubbly flow characterization.
authors.affiliation: Institut Universitate des Systèmes Thermiques Industriels, UMR No. 6595 CNRS/University of Provence, Technopôle Chateau Gombert, 13453 Marseille, France. fabrice.onofri@polytech.univ-mrs.fr
authors.forename: Fabrice
authors.initials: F
authors.lastname: Onofri
authors.forename: Mariusz
authors.initials: M
authors.lastname: Krysiek
authors.forename: Janusz
authors.initials: J
authors.lastname: Mroczka