Research Group Prof. Supponen
Optics and acoustics laboratory.
The research in our group aims at broadening the understanding of various small-scale multiphase fluid phenomena, such as bubble and droplet dynamics and the resulting fast flows. One of our key objectives is to control bubble oscillations to exploit their energy-focusing characteristics. We also develop experimental techniques to observe and characterise high-speed multiphase fluid phenomena optically and acoustically. Our diagnostics methods include ultra-high-speed imaging up to 10 million frames per second and x-ray imaging techniques. The nature of our research is both fundamental and applied.
We focus on the following research areas:
- Fundamentals of cavitation and bubble oscillations
- Bubbles and droplets in biomedical applications
- Advanced measurement techniques for multiphase flows
- Engineering applications for impulsive multiphase fluid phenomena
For an introductory presentation of our research, please see here.
Selection of multiphase phenomena. From top to bottom and left to right: Kidney stone lithotripsy radiograph; Acoustic droplet vaporization and jet; Faraday-instability and jetting of a tethered bubble; Shock wave-driven bubble jet; Antibubble collapse DNS; Cavitation bubble pair interaction; Fluorescence image of bubble-mediated sonoporation; Radiograph of a cavitation bubble splitting a particle agglomerate; Simulation of shock wave focusing by a droplet; Ultrasonic drop atomization radiograph.
Chemical laboratory.