A novel tidal support structure has been developed by a University in the UK, called SNAIL.
Snail is currently at its proof of concept stage. The principle of the Snail is based on the familiar upturned aerofoil found on most racing cars.
A number of hydrofoils are mounted on a frame in such a way as to induce a down force from the stream flow. Provided that the ratio of surface areas is such that the down force generated exceeds the overturning moment then the Snail will remain in position.
The design boasts of being simple, cheap, effective and quick. The structure has been proven in the lab and tested at sea level.
The structure could serve as a stable, secure positioning without the need for physical attachment to the seabed for aquaculture cages.
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Nirmal this unit sounds like it might be a beast in areas with strong tidal streams such as the Kimberly of WA where rates approach 7 and 8 knots.
Absolutely! As the tidal streams get stronger the downforce generated by the hydrofoils would be larger and helps to keep the structure in place even better!
Definitely a boon for the Kimberly region I reckon!