517471.fig.0010a
(a)
517471.fig.0010b
(b)
517471.fig.0010c
(c)
Figure 10: Transfer function Haligned(ω); modulus versus frequency (a), phase versus frequency (b); coherence between faligned and ucentral versus frequency (c); in still water, and for 3.4 m/s and 4.9 m/s fluid velocities.