The CASE for
DVC technology : Cost Effective - Adaptable - Simple - Efficient.
DVC technology incorporates specially
designed crossflow vertical axis rotors mounted within patented hydrofoil
cowlings which magnify velocity gradients in the vicinity of the rotors.
Further enhancement of the flow field is achieved using a patented
device based on the Bernoulli principle to favourably alter the dynamic
pressure field surrounding the rotors and to stabilise the vortices.
The vertical axis rotors and their water-lubricated bearings are the
only submerged moving parts. All electro-mechanical and electronic
equipment is mounted above the water surface within a weatherproof
housing. Since the support structure is contained within the flow
management cowlings, the entire disrupted flow pattern is utilised
in the energy conversion process so that the drag on the structure
is relatively low compared to the energy produced which when coupled
with other features, simplifies the foundations.
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Due to its simplicity
and ability to use conventional well-proven electro-mechanical
systems above the water surface, DVC technology is relatively
inexpensive to construct and install. Unlike other technologies
which are limited in their deployment, the technology is very
adaptable so that it is able to be deployed in most high energy
flow regimes even where the rotors may become partially exposed
at low tide. The device may even be installed within the piers
of bridges. |
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Velocity Magnitude Pathlines
for Bidirectional Cowling
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CFD Total Pressure
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