Dynamics of a vapor-gas bubble formed by laser breakdown in a liquid
Abstract
Hydrodynamic equations are employed to describe the explosive expansion of a vapor-gas void generated by laser breakdown in a liquid. For the simple case of the radial expansion of a gaseous spheroid modeled as an ellipsoid of revolution, the expansion process is assumed to be adiabatic; two equations in two variables are written to describe values of the minor and major axes of the spheroid at different times. The counterpressure of the liquid, which induces pulsations and compression rather than unbounded expansion, is also taken into account. Calculations conducted with the Runge-Kutta method indicate that the void compresses to an oblate spheroid by the end of the pulsation cycle.
- Publication:
-
PMTF Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki
- Pub Date:
- October 1977
- Bibcode:
- 1977PMTF...18...39L
- Keywords:
-
- Bubbles;
- Laser Applications;
- Liquid-Vapor Interfaces;
- Photodissociation;
- Gas Expansion;
- Hydrodynamic Equations;
- Oblate Spheroids;
- Runge-Kutta Method;
- Voids;
- Lasers and Masers