Offshore systems 2016 - 2019
This article reviews tidal barrages and lagoons, tidal
turbines, oscillating hydrofoils, and tidal kites to assess their
suitability for smaller-scale electricity generation in the
shallower waters of coastal areas at the design stage. That
is achieved by discussing each concept's power density,
scalability, durability, maintainability, economic potential,
and environmental impacts. The discussion suggests that
tidal kites and range devices are not well suited toward
small-scale shallow water applications due to depth and
size requirements, respectively. Cross-flow turbines appear
to be the most suitable technology, as they have high
power densities and a maximum size that is not
constrained by water depth.
Oscillating hydrofoils would also be appropriate, provided
comparable levels of efficiency can be achieved.
The time-domain simulation follows the heaving of the
conical float in waves and calculates the bag shape,
ballast motion, adiabatic air pressure, and the flow
through the turbine. There are two independent
oscillators, the float with its resonance and the bag/ballast
with its resonance. The coupling of the two oscillators
gives rise to a wide band response with two peaks in the
capture width, each reaching the theoretical A/2π. In this
new wave energy converter, apart from the turbine, there
are no mechanical moving parts, no joints nor pistons, no
end stops nor sliding seals, no maps nor one-way valves.
The documents are classified chronologically from 2016 to 2019.
Click on their descriptions to open and download them.