Page 316 - Fundamentals of Ocean Renewable Energy Generating Electricity From The Sea

Other Aspects of Ocean Renewable Energy Chapter | 10 299

FIG. 10.14 (A) Tidal residual bed shear stress and (B) associated bed level change resulting from
varying phase relationships between M 2 and M 4 tidal constituents. (Reproduced from S.P. Neill, E.J.
Litt, S.J. Couch, A.G. Davies, The impact of tidal stream turbines on large-scale sediment dynamics,
Renew. Energy 34 (12) (2009) 2803–2812, with permission from Elsevier.)

and (b) asymmetry. Using the Bristol Channel as a model case study, they
concluded that TEC arrays sited in regions of tidal asymmetry had considerably
more impact on sediment dynamics, since energy conversion alters residual
sediment transport in regions of asymmetry. By contrast, TEC array operation in
regions of tidal symmetry did not influence net sediment transport, and had less