Effect of the Rayleigh-Taylor instability on maximum reachable temperatures in laser-induced bubbles

LUDMILA RECHIMAN; BONETTO, FABIAN.J.; JUAN MANUEL ROSSELLO,

PHYSICAL REVIEW E

AMER PHYSICAL SOC

Lugar: New York; Año: 2012 p. 27301 - 27305

1539-3755

Laser-induced bubbles provide an effective vehicle to achieve high-energy concentrations and maximumtemperatures in bubble luminescence phenomena. One limitation to the temperatures that can be achieved isthe development of the Rayleigh-Taylor instability (RTI) during the instants previous to the bubble maximumcompression. For a given fluid, the control parameters of the experiment are: the bubble maximum radius, thebubble ambient radius, the initial perturbations of the bubble, and the liquid pressure at infinity. In this work,experiments using laser-induced bubbles in a highly viscous phosphoric acid were performed in order to determinethe achievable parameters values in the phase space. The effect of Rmax, R0, ai2, ai3, and p∞ on the maximumtemperature achieved by the gas contents inside the bubble were numerically determined. The results show foreach static pressure an optimum region for maximum temperatures of the gas contents bounded by the RTI.