Cavitation tunnels
HSVA has a long experience in cavitation testing and offers three tunnels for cavitation tests. Propellers behind complete ship models are investigated in HYKAT. In the two conventional cavitation tunnels (medium tunnel, large high speed cavitation tunnel) the propellers are tested in simulated ship model wake fields behind wire mesh screens or behind partial appendage models.
| Dimension of test section: | 0.57 x 0.57 x 2.20 meters |
| Max. velocity | 9.5 m/s |
| Max. revs. of model propeller | 58 1/s |
| Range of propeller diameter | 240-290 mm |
| Description of facility: | Produced by K & R, K22 type |
| Type of drive system: | 4 bladed axial flow impeller, 4-quadrant converter control |
| Total motor power: |
Impeller: 60 kW at 1500 1/min Propeller: 14.3 kW at 3500 1/min |
| Max. & min. pressures: | 1.5 bar absolut down - vapour pressure |
| Instrumentation: | Laser Doppler Velocimetry |
| Types and locations of torque and thrust dynam.: | Mechanical, upstream, horizontal shaft, 14.3 kW at 3500 1/min |
| Tests performed: | Cavitation tests in uniform flow as well as in simulated wake fields |
| Dimension of test section: | 0.75 x 2.25 meters, circular |
| Max. velocity | 19.5 m/s |
| Max. revs. of model propeller | 75 1/s |
| Range of propeller diameter | 1. 300-400 mm 2. 280-320 mm |
| Description of facility: | Produced by K & R, K16 type |
| Type of drive system: | 4 bladed axial flow impeller, Leonard-System |
| Total motor power: | Impeller: 350 kW at 375 1/min Propeller: 130 kW at 4500 1/min |
| Max. & min. pressures: | 2.5 bar absolut down - vapour pressure |
| Types and locations of torque and thrust dynam.: | 1. Mechanical, upstream, horizontal shaft, 130 kW at 4500 1/min 2. Strain gauges, downstream, inclined shaft up to 12 degree |
| Tests performed: | Cavitation tests in uniform flow as well as in simulated wake field. CR and tandem propeller testing, high Reynolds Number testing, partial rudder model testing. |
