Experimental analysis of bubble size dispersion and Y-junction types of bubble generator

The characteristics of flows generated in different Y-junction bubble generators will be studied.Previous studies carried out in the micro-gravity laboratory at the EPSC (Escola Politècnica Superior de Castelldefels) which is a Higher Education School of the Polytechnical University of Catalonia (UPC) allowed to characterize the behavior of bubbles within a T-junction type bubble generator with water or alcohol in micro-gravity condition. David Billaud, another student from ENSEEIHT doing his training period with me, carried out experiments with a bubble generator which sits at the border between gravity and micro-gravity condition. My work at EPSC consisted of analyzing the dynamics of bubbles. Firstly I analyzed the frequency of small bubbles into a bubble flow in order to find out if there would be a particular pattern. Secondly, I characterized two Y-junction type bubble generator of 30 and 60 degrees. Conclusions enable to characterize Y-junction type bubble generator behavior and allow us to better understand the presence of small bubbles in bubble flows