Figure 3.

Deterministic and expected power (continuous and dashed lines, left-hand axis) and change in expected power (dashed-dotted lines, right-hand axis) in GW extracted in the fully spanned (a), asymmetrically confined (b), and laterally confined (c) fence deployment scenarios as a function of scaled turbine drag coefficient $C_t/{\mu }_{C_d}$ for different values of mean bed roughness coefficient ${\mu }_{C_d}=\{0.0025,0.005,0.016\}$ (blue, red and green, respectively). The input relative standard deviation in all cases is ${\hat{\sigma }}_{C_d}^{\ast }=0.3$.