Vapour bubble collapse: The influence of the initial radius and of subcooling

Experimental results for rising bubbles with initial radii ranging from 0.06 to 1 cm collapsing in water during a short pressure rise are presented. Data are analysed in two ways: -firstly investigating the influence of the initial radius and of subcooling on the bubble wall velocity; -secondly experimental data relating to bubble radius decrease are compared in dimensionless form, with a spherically symmetric heat transfer theory. A strong influence of the initial radius and of subcooling contradictory to the theory is still shown.