The luminescence of cavitation bubble generated by spark discharge in water

Cavitation bubble can be generated by ultrasound, laser or spark discharge underwater. It has good potential in the application of medical treatment, environmental treatment and surface cleaning. When the bubble collapse, the vapor inside will be compressed quickly and the temperature will rise to several thousand Kelvin, even reach ten of thousand Kelvin, and the pressure inside is around several hundred atm. Under such condition, there will be luminescence phenomena inside of the bubble if its energy is large enough. In this project, we want to use simulation and experimental methods to study the luminescence inside of the cavitation bubble. The temperature and pressure variation will be simulated and the intensity and spectrum characteristic of luminescence will be
studied by using high speed photography and emission spectra methods.

Faculty Supervisor:

Jesse Zhu


Jim Chen



Engineering - chemical / biological



Western University



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