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A r c h i v e d N e w s
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New
State of the Art Wave Tank
24/04/02
Our new multi-directional shallow water wave-tank facility is now in
its final stages of commissioning. The new tank is 20m long x 6m wide
x 1.5m deep. It is equipped with the latest displacement piston type
wavemaker. The new wave tank is in addition to our single direction
wave energy testing centre which we have been operating since 1995.
Verifying mathematical models with results from wave tank testing is
essential for the development of wave energy devices. The new test
facilities will enable us to intensify model testing of our floating
wave energy devices.
The new wave tank is fitted with absorbing random piston wavemakers
which use a displacement technique that allows perfect flat front
piston action without using seals.
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Multi-Directional Wave Tank Specification |
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Size
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20m long
x 6m wide x 1.5m deep |
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Wavemakers |
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8
independent piston wavemakers. Each paddle is independently driven
by brushless AC servo motor and supplied with force absorption
feedback control electronics |
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Seas |
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Mixed,
short crested |
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Spectra |
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Pierson
Moskovitch, ISSC, Scott Bretschneider, Neumann, Gaussian,
Mitsuyasu and JONSWAP |
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Instrumentation & Software |
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Industrial PC |
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10
Channel strain gauge amplifier / conditioning unit |
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6
Channels of water/wave height probe amplifiers |
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2 x
Analogue to Digital boards for 64 true differential channels. |
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Labtech
Notebook and Instrunet software for data acquisition. |
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6 motion
response sensors |
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12 x
250N Waterproof load cells |
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12 x
Linear Displacement Tranducers |
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2 x 500N
Axial Load cells |
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2
Tri-axial load cells (500N) |
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10 IP68
rated miniature absolute pressure transducers (0-200mbar). |
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MKS
Differential pressure transducers (+/-500 Pa) |
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MKS
Differential pressure transducers (+/-100 torr) |
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Submersible Bi-axial Load Table, capacity 3kN (subject to detailed
model layout) |
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Model
making workshop |
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Video
and stills photographic facilities |
Single Direction Wave Tank Testing Facilities
Wavegen's hydraulic laboratory has been specifically developed for
measuring the performance of wave energy systems in the near shore and
coastal environments. The absorbent wave paddle produces both regular
and irregular wave, and can simulate extreme spectra at a scale of
40:1 at water depths up to 20m. Real sea conditions can be simulated
for specific locations worldwide.
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Maximum
depth at paddle 1.2m |
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3.7m
wide Active paddle - AC servo motor driven |
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Floor
dimensions - 18.3m x 3.7m (60ft x 12ft) |
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Standard
Layout - Staged 1:25 slope, wave absorbent beach and walls |
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