Facility
- Test section: 1200 mm (Length) x 190 mm (Width) x 190 mm (Depth)
- Capable of flow speed up to 20 m/s
- Pressurization and vacuum system capable of varying pressure in a range from 5 KPa to 300 KPa
- Bubble collecting dome ensures continuous operation of cavitation and ventilation experiments
Measurement Techniques
Particle image velocimetry (PIV)
- PIV system in our group consists of three Photron high speed cameras and a Photonics pulsed laser
- It is capable of stereo time resolved PIV measurement
Shadow image velocimetry
- Pulsed LED source provides a volumetric illumination to measure bubble size distribution and velocity use shadow image
- In-house developed software is capable of measre the sizes of both in-focus and out-of-focus bubbles as well as bubble clusters
Digital inline holography
- Single-beam light source that illuminates the flow particles and uses a digital sensor to record the interference patterns between the scattered and undisturbed portions of the beam
- 3D locations and sizes of the particles are obtained through in-house developed digital reconstruction and object segmentation software
Acoustic measurement
- The acoustic measurement system in our group consists of 3 Bruel & Kjaer 8103 types hydrophones and corresponding data acquisition system
- Capable of conducting bubble/cavitation related water tunnel acoustic experiments at multiple locations
Laser Doppler velocimetry (LDV) and Phase Doppler Anemometry (PDA)
- Equipped with LDV for velocitry measurement in the flow and PDA for the measurement of bubble size distribution
- Provides the capability to measure particles in the size range of 10µm < d < 3000µm