Large towing tank
The large towing tank at HSVA is a multi-purpose test facility for hydrodynamic model testing. In the basin we test small, large, slow and fast models. Testing equipment for all kind of model tests in calm water and waves is available as standard. HSVA operates the large towing tank for many decades ensuring highest quality with respect to accuracy and repeatability.
- Resistance and Propulsion
- Seakeeping
- Manoeuvring free running and captive
- Planar motion
- Open water propeller
- Wake measurement
- Motions in waves
- Flow visualization
- Drag coefficients
- Hydrodynamic loads, forces and pressures
- Mooring tests
- Submarine tests
- VIM
- Main carriage equipped with transverse carriage
- Double-flap wave maker at short side
- Snake type wave maker at long side
- CPMC (computerized planar motion carriage)
- Open water propeller dynamometer
- Beaches for wave damping
- Gantry crane 8t
- Model size up to 15 m
- Tank length: 300 m
- Tank width: 18 m
- Water depth: 5.6 m
- 30.000 m³ fresh water
- Type of drive and total power: 4 wheels, 8 servodrives (70 kW each)
- Towing Carriage max. speed: 10.00 m/s
- Towing Carriage max acceleration: 0.80 m/s2
- Towing Carriage max. deceleration: 1.40 m/s2
- Transverse carriage
- Suitable for large structures
Wave maker short side:
- Short side: double-flap wave maker, hydraulic driven
- 18 meters wide
- Maximum significant wave height 0.45 m
- Manufacturer: Kempf and Remmers
- Beach on opposite side: sparred wood grating at trimming tank side
- Generation of longcrested regular wave, irregular waves, wave packets, user-defined wave trains and spectra
- In house developed wave generation software
- Automated wave calibration over night
Wave maker long side
- Electric driven snake type with 80 flaps
- Flap width 0.5 m
- Maximum significant wave height 0.25 m
- Manufacturer: Bosch Rexroth
- Retractable from basin
- Foldable beaches consisting of perforated plates on opposite side
- Generation of long- and short-crested regular wave, oblique waves, irregular waves, wave packets, user-defined wave trains and spectra
- Coupled to the towing carriage
- CPMC max speed, longitudinal: 4.0 m/s
- CPMC max speed, transverse: 1.9 m/s
- CPMC max yaw rate: 23°/s
- Suitable for large models and large forces
- Force and pressure transducers
- Accelerometer
- Wave probes
- Torque and thrust dynamometer
- 6 component force balances
- Wave measurement sensors
- Open water dynamometer
- Submarine testing setup
- Optical tracking system
- Data acquisition