The Hamburg Ship Model Basin

Setting the Standard in Ship Optimisation

Video 100 years

HYKAT

HYKAT

Description of facility: Closed circulating cavitation tunnel with horizontal top, bottom branch submerged in a trench, numerous acoustic treatment features, variable speed, variable pressure, aeration/dearation system
Type of drive system: 2 electric motors (each 850 kW) driving a 3.775 m diameter seven bladed impeller, stator with nine blades
Test section max. velocity: 12.6 m/s (22.5 knots)
Max. & min. absolut pressures: 2.5 bar, 0.15 bar
Instrumentation:
  • Propeller dynamometers with drive motors inside flooded models
  • Pressure sensors, hydrophones in the acoustical trough under the test section floor or in the models, computerized data collection, video system inside the flooded models, Laser-Doppler-Velocimetry (LDV)
  • Planar Motion mechanism (PMM)
  • High speed video system
  • Particle-Image-Velocimetry (PIV)
Dimension of test section: 2.80 x 1.60 x 11.00 meters, allowing installation of complete ship models
Propeller and model size range: Up to 11.0 m length, 1.7 m beam, propeller diameter 200 to 300 mm
Max. revs. of model propeller: 60 1/s
Tests performed: Propeller and rudder cavitation observations, cavitation inception investigations, Thrust break down tests, force measurements, determination of hydrodynamic coefficients from maneouvring tests, flow visualization, noise tests on complete hull - appendage - propulsor configurations, investigations on surface ships, submarines, torpedoes and full scale propulsor units, flow noise investigations, wake measurements