Research facilities
Three major facilities in particular are relevant for
CeSOS:
Further test facilities have been specially made by CeSOS,
such as the means of studying sloshing in tanks.
Towing tank

The towing tank, 260m in length and 10.5 m wide, permits complex testing in
waves up to a height of 0.9 m and a period in the range 0.8 – 5.5 s. Tank
depth varies between 5.6 and 10 m. The dynamometers are compatible with computerised
data collection and reduction. Strain-gauge dynamometers can measure towing
force and undertake open-water and propulsion tests.
Test equipment for fixed and floating structures can measure:
The ocean basin
With
a suface of 80x50 m and water depth variable to a maximum of 10 m, the ocean
basin is used in ship manoevering, sea-keeping, marine offshore, floating
and offshore structure tests.
Both basic and applied ship and offshore problems can be
addressed. Wind, waves and currents can be simulated, to provide unique testing
conditions for all models of any type of fixed or floating structure. 3-dimensional
wave conditions are also possible.
Marine cybernetics laboratory
MCLab is our experimental laboratory for testing ships,
rigs, underwater vehicles and propulsion systems. Since 2002 it has also been
a Marie Curie Training Site.
Seakeeping tests use scale models, which can be telemetered
without cables thanks to a wireless ethernet connection and a micro-PC onboard.
More info on laboratory sites at NTNU and MARINTEK which CeSOS is free
to use for planned experiments:
Sloshing tanks

Three tanks have been designed and
installed to undertake sloshing experiments in CeSOS.
- Plexiglass tank with internal
dimensions of 1.0x0.6x0.6m (see Figure). This tank contains a moveable
wall, so that different inner compartment sizes can be studied. A
special mesh attached to the inner roof can be let down to dampen
out wave motions inside. The tank has mainly been used to study three-dimensional
sloshing and high-filling sloshing, using high-speed imaging to capture
the sloshing-induced impact flow.
- Plexiglass tank 1 m x 1 m x 0.1 m. This
tank has been used for particle image velocimetry (PIV) and high-speed
imaging of high-filling sloshing induced impacts, and also for an
isolated study of low-filling impact.
- Stiffened steel tank 0.8 m x 1.0 m x 0.8
m, with an opening for insertion
of a flexible plate. This is positioned at the top of one of the tank
ends. The tank has been used to study sloshing induced impacts and
the effect of hydroelasticity.
Other tanks operated by MARINTEK have also been applied.
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Last revised: 28 June 2006.
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