Offshore Engineering Basin
Description: rectangular tank 75m (346 ft) in length, 32m (105 ft) in width, water
depth 0.1m (.33 ft) to
3.2m (10.5 ft), models
are floated, moored or self-propelled in various sea states. Moveable overhead
crane (5000 kg).
Wave Generation: 168 individual wavemaker segments in an
'L' configuration, hydraulically actuated, can be adjusted vertically to
accommodate water depths of 0.1m to 3.2m, three modes of articulation: flapper ± 15°,
piston ± 400mm, and a combination of
both, 1800kW power, also fixed and moveable
passive wave absorbers. Maximum height is 0.8m for
regular waves and 0.5m significant for irregular
waves.
Current Generation: 1000 HP
recirculating water system, current speed dependent on water depth.
Wind Generation: 12 fan bank with gusting capability,
maximum wind speed 12 m/s @ 10m from fans.
Model Size: ship models up to 4.5m in length, floating or fixed structures 0.5m to 6m diameter.
Instrumentation: wave measurement using capacitance and
ultrasonic probes, pressure transducers and electromagnetic and acoustic flow
meters, force measurement with strain gauge load cells.
Data Acquisition: A VMS and Windows
NT based distributed client/server
system using one or more IOtech DaqBoards, each with 256 channel capability at
100kHz aggregate.
Tests Performed:
(1) ship or structure behaviour in
multi-directional seas.
(2) manoeuvring and station keeping.
(3) tow
out, set down and operation of offshore structures.
(4) seakeeping in
oblique waves.
Schematic Diagrams (click to expand)
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