Page 335 - Fundamentals of Ocean Renewable Energy Generating Electricity From The Sea

318 Index

T_TIDE, 60 practical resource, 139
Turbulent flows survivability, 139
Navier–Stokes equations, 37 technical resource, 137–139
shear stress, 37 theoretical resource, 137–139
Turbulent kinetic energy, 230–232 tidal resource assessment, 135–139, 136f,
2D (spectral) wave models, 291 137f, 138f
transformation
U refraction, 122–124, 123f, 124f
shoaling, 121–122, 121f, 122t
United Kingdom
wave breaking, 118–120, 119f
nuclear generation, 28–29, 28f
wave power, 112–113
UK National Grid, 14
Wave energy converters (WECs), 178–179,
Unstructured grid, 194, 194f
250–254
attenuator, 125
V comparison, 128, 128t
Velocity profile, tides, 66, 67f, 163 forced vibration, 131–132, 132f
Venturi effect devices, 71, 72f free vibration, 129–131
Vertical acceleration, 40 heaving point absorber, 133–135
Vertical axis turbines, 70, 71f mass-spring-damper, 128–129
Vertical coordinate system, 195 motions, 128
Vibration oscillating water column, 127
damping ratio, 132, 132f oscillating wave surge converters, 126
forced, 131–132 overtopping devices, 127
forcing function, 132, 132f surface point absorbers, 126, 127f
free, 129–131 Wave Information Studies (WIS), 97–98,
98f
Wave power, 112–113
W for irregular waves, 116–118
Wake effect, 243–244 for monochromatic waves, 286
Wave(s) Wave resource characterization,
crests, 122, 123f 291–292
diffraction, 124–125, 125f Acoustic Waves and Currents, 180
refraction, 122–124, 124f bias, 216–217
shoaling, 121–122, 121f, 122t correlation coefficient, 216
Snell’s law, 122–123 dissipation, 214
Wave buoys Galway Bay (Ireland), 221–225
directional characteristics, 178–179 nonlinear wave-wave interactions,
general principles, 175–176, 177f 214–215
spectral characteristics, 179–180 phase-averaged, 213
temporal characteristics, 177–178 pressure transducers, 180
WaveNet, 175, 176f root mean squared error, 216
WaveCat device, 291–292 scatter index, 216
Wave energy, 279–280 wave buoys, 175–180
diffraction, 124–125, 125f wind input, 213–214
dispersion equation, 111–112, 112f Wave tide interaction, 285
irregular waves, 114–118, 115f tidal currents on wave energy,
linear wave theory, 108–111, 111t 286–288
maintenance, 139 waves on tidal energy, 288–289
monochromatic sinusoidal wave, 108, Weibull distribution, 95–96, 96f
108f Western boundary currents, 142
nonlinear dispersion equation, 120, 120f Wind
nonlinear waves, 118–120 defined, 83
Pelamis power matrix, 137–139, 138f energy, 83–84, 277–279